diff --git a/.circleci/config.yml b/.circleci/config.yml
index 93362ee5b5..866f07aeb7 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -25,7 +25,7 @@ workflows:
           matrix:
             parameters:
               # Run with MSRV and some modern stable Rust
-              rust-version: ["1.54.0", "1.59.0"]
+              rust-version: ["1.56.1", "1.59.0"]
       - benchmarking:
           requires:
             - package_vm
@@ -64,7 +64,7 @@ jobs:
           command: |
             wget https://static.rust-lang.org/rustup/dist/aarch64-unknown-linux-gnu/rustup-init
             chmod +x rustup-init
-            ./rustup-init -y --default-toolchain 1.54.0 --profile minimal
+            ./rustup-init -y --default-toolchain 1.56.1 --profile minimal
       - run:
           name: Version information
           command: rustc --version; cargo --version; rustup --version; rustup target list --installed
@@ -73,7 +73,7 @@ jobs:
           command: rustup target add wasm32-unknown-unknown && rustup target list --installed
       - restore_cache:
           keys:
-            - cargocache-v2-arm64-rust:1.54.0-{{ checksum "Cargo.lock" }}
+            - cargocache-v2-arm64-rust:1.56.1-{{ checksum "Cargo.lock" }}
       - run:
           name: "contracts/crypto-verify: integration-test"
           working_directory: ~/project/contracts/crypto-verify
@@ -113,11 +113,11 @@ jobs:
             - target/debug/.fingerprint
             - target/debug/build
             - target/debug/deps
-          key: cargocache-v2-arm64-rust:1.54.0-{{ checksum "Cargo.lock" }}
+          key: cargocache-v2-arm64-rust:1.56.1-{{ checksum "Cargo.lock" }}
 
   package_crypto:
     docker:
-      - image: rust:1.54.0
+      - image: rust:1.56.1
     steps:
       - checkout
       - run:
@@ -125,7 +125,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version; rustup target list --installed
       - restore_cache:
           keys:
-            - cargocache-v2-package_crypto-rust:1.54.0-{{ checksum "Cargo.lock" }}
+            - cargocache-v2-package_crypto-rust:1.56.1-{{ checksum "Cargo.lock" }}
       - run:
           name: Build
           working_directory: ~/project/packages/crypto
@@ -140,11 +140,11 @@ jobs:
             - target/debug/.fingerprint
             - target/debug/build
             - target/debug/deps
-          key: cargocache-v2-package_crypto-rust:1.54.0-{{ checksum "Cargo.lock" }}
+          key: cargocache-v2-package_crypto-rust:1.56.1-{{ checksum "Cargo.lock" }}
 
   package_schema:
     docker:
-      - image: rust:1.54.0
+      - image: rust:1.56.1
     steps:
       - checkout
       - run:
@@ -152,7 +152,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version; rustup target list --installed
       - restore_cache:
           keys:
-            - cargocache-v2-package_schema-rust:1.54.0-{{ checksum "Cargo.lock" }}
+            - cargocache-v2-package_schema-rust:1.56.1-{{ checksum "Cargo.lock" }}
       - run:
           name: Build
           working_directory: ~/project/packages/schema
@@ -167,11 +167,14 @@ jobs:
             - target/debug/.fingerprint
             - target/debug/build
             - target/debug/deps
-          key: cargocache-v2-package_schema-rust:1.54.0-{{ checksum "Cargo.lock" }}
+          key: cargocache-v2-package_schema-rust:1.56.1-{{ checksum "Cargo.lock" }}
 
   package_std:
     docker:
-      - image: rust:1.54.0
+      - image: rust:1.56.1
+    environment:
+      # Limit the number of parallel jobs to avoid OOM crashes during doc testing
+      RUST_TEST_THREADS: 8
     steps:
       - checkout
       - run:
@@ -179,7 +182,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version; rustup target list --installed
       - restore_cache:
           keys:
-            - cargocache-v2-package_std-rust:1.54.0-{{ checksum "Cargo.lock" }}
+            - cargocache-v2-package_std-rust:1.56.1-{{ checksum "Cargo.lock" }}
       - run:
           name: Add wasm32 target
           command: rustup target add wasm32-unknown-unknown && rustup target list --installed
@@ -226,11 +229,11 @@ jobs:
             - target/debug/.fingerprint
             - target/debug/build
             - target/debug/deps
-          key: cargocache-v2-package_std-rust:1.54.0-{{ checksum "Cargo.lock" }}
+          key: cargocache-v2-package_std-rust:1.56.1-{{ checksum "Cargo.lock" }}
 
   package_storage:
     docker:
-      - image: rust:1.54.0
+      - image: rust:1.56.1
     steps:
       - checkout
       - run:
@@ -238,7 +241,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version; rustup target list --installed
       - restore_cache:
           keys:
-            - cargocache-v2-package_storage-rust:1.54.0-{{ checksum "Cargo.lock" }}
+            - cargocache-v2-package_storage-rust:1.56.1-{{ checksum "Cargo.lock" }}
       - run:
           name: Build library for native target
           working_directory: ~/project/packages/storage
@@ -257,11 +260,11 @@ jobs:
             - target/debug/.fingerprint
             - target/debug/build
             - target/debug/deps
-          key: cargocache-v2-package_storage-rust:1.54.0-{{ checksum "Cargo.lock" }}
+          key: cargocache-v2-package_storage-rust:1.56.1-{{ checksum "Cargo.lock" }}
 
   package_vm:
     docker:
-      - image: rust:1.54.0
+      - image: rust:1.56.1
     steps:
       - checkout
       - run:
@@ -269,7 +272,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version; rustup target list --installed
       - restore_cache:
           keys:
-            - cargocache-v2-package_vm-rust:1.54.0-{{ checksum "Cargo.lock" }}
+            - cargocache-v2-package_vm-rust:1.56.1-{{ checksum "Cargo.lock" }}
       - run:
           name: Build
           working_directory: ~/project/packages/vm
@@ -292,11 +295,11 @@ jobs:
             - target/debug/.fingerprint
             - target/debug/build
             - target/debug/deps
-          key: cargocache-v2-package_vm-rust:1.54.0-{{ checksum "Cargo.lock" }}
+          key: cargocache-v2-package_vm-rust:1.56.1-{{ checksum "Cargo.lock" }}
 
   contract_burner:
     docker:
-      - image: rust:1.54.0
+      - image: rust:1.56.1
     environment:
       RUST_BACKTRACE: 1
     working_directory: ~/cosmwasm/contracts/burner
@@ -308,7 +311,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version
       - restore_cache:
           keys:
-            - cargocache-v2-contract_burner-rust:1.54.0-{{ checksum "Cargo.lock" }}
+            - cargocache-v2-contract_burner-rust:1.56.1-{{ checksum "Cargo.lock" }}
       - run:
           name: Add wasm32 target
           command: rustup target add wasm32-unknown-unknown && rustup target list --installed
@@ -342,11 +345,11 @@ jobs:
             - target/wasm32-unknown-unknown/release/.fingerprint
             - target/wasm32-unknown-unknown/release/build
             - target/wasm32-unknown-unknown/release/deps
-          key: cargocache-v2-contract_burner-rust:1.54.0-{{ checksum "Cargo.lock" }}
+          key: cargocache-v2-contract_burner-rust:1.56.1-{{ checksum "Cargo.lock" }}
 
   contract_crypto_verify:
     docker:
-      - image: rust:1.54.0
+      - image: rust:1.56.1
     environment:
       RUST_BACKTRACE: 1
     working_directory: ~/cosmwasm/contracts/crypto-verify
@@ -358,7 +361,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version
       - restore_cache:
           keys:
-            - cargocache-v2-contract_crypto_verify-rust:1.54.0-{{ checksum "Cargo.lock" }}
+            - cargocache-v2-contract_crypto_verify-rust:1.56.1-{{ checksum "Cargo.lock" }}
       - run:
           name: Add wasm32 target
           command: rustup target add wasm32-unknown-unknown && rustup target list --installed
@@ -392,11 +395,11 @@ jobs:
             - target/wasm32-unknown-unknown/release/.fingerprint
             - target/wasm32-unknown-unknown/release/build
             - target/wasm32-unknown-unknown/release/deps
-          key: cargocache-v2-contract_crypto_verify-rust:1.54.0-{{ checksum "Cargo.lock" }}
+          key: cargocache-v2-contract_crypto_verify-rust:1.56.1-{{ checksum "Cargo.lock" }}
 
   contract_hackatom:
     docker:
-      - image: rust:1.54.0
+      - image: rust:1.56.1
     environment:
       RUST_BACKTRACE: 1
     working_directory: ~/cosmwasm/contracts/hackatom
@@ -408,7 +411,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version
       - restore_cache:
           keys:
-            - cargocache-v2-contract_hackatom-rust:1.54.0-{{ checksum "Cargo.lock" }}
+            - cargocache-v2-contract_hackatom-rust:1.56.1-{{ checksum "Cargo.lock" }}
       - run:
           name: Add wasm32 target
           command: rustup target add wasm32-unknown-unknown && rustup target list --installed
@@ -442,11 +445,11 @@ jobs:
             - target/wasm32-unknown-unknown/release/.fingerprint
             - target/wasm32-unknown-unknown/release/build
             - target/wasm32-unknown-unknown/release/deps
-          key: cargocache-v2-contract_hackatom-rust:1.54.0-{{ checksum "Cargo.lock" }}
+          key: cargocache-v2-contract_hackatom-rust:1.56.1-{{ checksum "Cargo.lock" }}
 
   contract_ibc_reflect:
     docker:
-      - image: rust:1.54.0
+      - image: rust:1.56.1
     environment:
       RUST_BACKTRACE: 1
     working_directory: ~/cosmwasm/contracts/ibc-reflect
@@ -458,7 +461,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version
       - restore_cache:
           keys:
-            - cargocache-v2-contract_ibc_reflect-rust:1.54.0-{{ checksum "Cargo.lock" }}
+            - cargocache-v2-contract_ibc_reflect-rust:1.56.1-{{ checksum "Cargo.lock" }}
       - run:
           name: Add wasm32 target
           command: rustup target add wasm32-unknown-unknown && rustup target list --installed
@@ -492,11 +495,11 @@ jobs:
             - target/wasm32-unknown-unknown/release/.fingerprint
             - target/wasm32-unknown-unknown/release/build
             - target/wasm32-unknown-unknown/release/deps
-          key: cargocache-v2-contract_ibc_reflect-rust:1.54.0-{{ checksum "Cargo.lock" }}
+          key: cargocache-v2-contract_ibc_reflect-rust:1.56.1-{{ checksum "Cargo.lock" }}
 
   contract_ibc_reflect_send:
     docker:
-      - image: rust:1.54.0
+      - image: rust:1.56.1
     environment:
       RUST_BACKTRACE: 1
     working_directory: ~/cosmwasm/contracts/ibc-reflect-send
@@ -508,7 +511,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version
       - restore_cache:
           keys:
-            - cargocache-v2-contract_ibc_reflect_send-rust:1.54.0-{{ checksum "Cargo.lock" }}
+            - cargocache-v2-contract_ibc_reflect_send-rust:1.56.1-{{ checksum "Cargo.lock" }}
       - run:
           name: Add wasm32 target
           command: rustup target add wasm32-unknown-unknown && rustup target list --installed
@@ -542,11 +545,11 @@ jobs:
             - target/wasm32-unknown-unknown/release/.fingerprint
             - target/wasm32-unknown-unknown/release/build
             - target/wasm32-unknown-unknown/release/deps
-          key: cargocache-v2-contract_ibc_reflect_send-rust:1.54.0-{{ checksum "Cargo.lock" }}
+          key: cargocache-v2-contract_ibc_reflect_send-rust:1.56.1-{{ checksum "Cargo.lock" }}
 
   contract_floaty:
     docker:
-      - image: rust:1.54.0
+      - image: rust:1.56.1
     environment:
       RUST_BACKTRACE: 1
     working_directory: ~/cosmwasm/contracts/floaty
@@ -558,7 +561,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version
       - restore_cache:
           keys:
-            - cargocache-v2-contract_floaty-rust:1.54.0-{{ checksum "Cargo.lock" }}
+            - cargocache-v2-contract_floaty-rust:1.56.1-{{ checksum "Cargo.lock" }}
       - run:
           name: Add wasm32 target
           command: rustup target add wasm32-unknown-unknown && rustup target list --installed
@@ -568,6 +571,9 @@ jobs:
       - run:
           name: Unit tests
           command: cargo unit-test --locked
+      - run:
+          name: Integration tests (singlepass backend)
+          command: cargo integration-test --locked --no-default-features
       - run:
           name: Build and run schema generator
           command: cargo schema --locked
@@ -589,11 +595,11 @@ jobs:
             - target/wasm32-unknown-unknown/release/.fingerprint
             - target/wasm32-unknown-unknown/release/build
             - target/wasm32-unknown-unknown/release/deps
-          key: cargocache-v2-contract_floaty-rust:1.54.0-{{ checksum "Cargo.lock" }}
+          key: cargocache-v2-contract_floaty-rust:1.56.1-{{ checksum "Cargo.lock" }}
 
   contract_queue:
     docker:
-      - image: rust:1.54.0
+      - image: rust:1.56.1
     environment:
       RUST_BACKTRACE: 1
     working_directory: ~/cosmwasm/contracts/queue
@@ -605,7 +611,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version
       - restore_cache:
           keys:
-            - cargocache-v2-contract_queue-rust:1.54.0-{{ checksum "Cargo.lock" }}
+            - cargocache-v2-contract_queue-rust:1.56.1-{{ checksum "Cargo.lock" }}
       - run:
           name: Add wasm32 target
           command: rustup target add wasm32-unknown-unknown && rustup target list --installed
@@ -639,11 +645,11 @@ jobs:
             - target/wasm32-unknown-unknown/release/.fingerprint
             - target/wasm32-unknown-unknown/release/build
             - target/wasm32-unknown-unknown/release/deps
-          key: cargocache-v2-contract_queue-rust:1.54.0-{{ checksum "Cargo.lock" }}
+          key: cargocache-v2-contract_queue-rust:1.56.1-{{ checksum "Cargo.lock" }}
 
   contract_reflect:
     docker:
-      - image: rust:1.54.0
+      - image: rust:1.56.1
     environment:
       RUST_BACKTRACE: 1
     working_directory: ~/cosmwasm/contracts/reflect
@@ -655,7 +661,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version
       - restore_cache:
           keys:
-            - cargocache-v2-contract_reflect-rust:1.54.0-{{ checksum "Cargo.lock" }}
+            - cargocache-v2-contract_reflect-rust:1.56.1-{{ checksum "Cargo.lock" }}
       - run:
           name: Add wasm32 target
           command: rustup target add wasm32-unknown-unknown && rustup target list --installed
@@ -689,11 +695,11 @@ jobs:
             - target/wasm32-unknown-unknown/release/.fingerprint
             - target/wasm32-unknown-unknown/release/build
             - target/wasm32-unknown-unknown/release/deps
-          key: cargocache-v2-contract_reflect-rust:1.54.0-{{ checksum "Cargo.lock" }}
+          key: cargocache-v2-contract_reflect-rust:1.56.1-{{ checksum "Cargo.lock" }}
 
   contract_staking:
     docker:
-      - image: rust:1.54.0
+      - image: rust:1.56.1
     environment:
       RUST_BACKTRACE: 1
     working_directory: ~/cosmwasm/contracts/staking
@@ -705,7 +711,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version
       - restore_cache:
           keys:
-            - cargocache-v2-contract_staking-rust:1.54.0-{{ checksum "Cargo.lock" }}
+            - cargocache-v2-contract_staking-rust:1.56.1-{{ checksum "Cargo.lock" }}
       - run:
           name: Add wasm32 target
           command: rustup target add wasm32-unknown-unknown && rustup target list --installed
@@ -739,11 +745,11 @@ jobs:
             - target/wasm32-unknown-unknown/release/.fingerprint
             - target/wasm32-unknown-unknown/release/build
             - target/wasm32-unknown-unknown/release/deps
-          key: cargocache-v2-contract_staking-rust:1.54.0-{{ checksum "Cargo.lock" }}
+          key: cargocache-v2-contract_staking-rust:1.56.1-{{ checksum "Cargo.lock" }}
 
   fmt:
     docker:
-      - image: rust:1.54.0
+      - image: rust:1.56.1
     steps:
       - checkout
       - run:
@@ -751,7 +757,7 @@ jobs:
           command: rustc --version; cargo --version; rustup --version; rustup target list --installed
       - restore_cache:
           keys:
-            - cargocache-v2-fmt-rust:1.54.0-{{ checksum "Cargo.lock" }}
+            - cargocache-v2-fmt-rust:1.56.1-{{ checksum "Cargo.lock" }}
       - run:
           name: Add rustfmt component
           command: rustup component add rustfmt
@@ -792,7 +798,7 @@ jobs:
             - target/debug/.fingerprint
             - target/debug/build
             - target/debug/deps
-          key: cargocache-v2-fmt-rust:1.54.0-{{ checksum "Cargo.lock" }}
+          key: cargocache-v2-fmt-rust:1.56.1-{{ checksum "Cargo.lock" }}
 
   fmt_extra:
     docker:
@@ -966,7 +972,7 @@ jobs:
 
   benchmarking:
     docker:
-      - image: rust:1.54.0
+      - image: rust:1.56.1
     environment:
       RUST_BACKTRACE: 1
     steps:
@@ -976,7 +982,7 @@ jobs:
           command: rustc --version && cargo --version
       - restore_cache:
           keys:
-            - cargocache-v2-benchmarking-rust:1.54.0-{{ checksum "Cargo.lock" }}
+            - cargocache-v2-benchmarking-rust:1.56.1-{{ checksum "Cargo.lock" }}
       - run:
           name: Run vm benchmarks (Singlepass)
           working_directory: ~/project/packages/vm
@@ -994,7 +1000,7 @@ jobs:
             - target/release/.fingerprint
             - target/release/build
             - target/release/deps
-          key: cargocache-v2-benchmarking-rust:1.54.0-{{ checksum "Cargo.lock" }}
+          key: cargocache-v2-benchmarking-rust:1.56.1-{{ checksum "Cargo.lock" }}
 
   # This job roughly follows the instructions from https://circleci.com/blog/publishing-to-github-releases-via-circleci/
   build_and_upload_devcontracts:
@@ -1027,7 +1033,7 @@ jobs:
           name: Check development contracts
           command: |
             echo "Checking all contracts under ./artifacts"
-            docker run --volumes-from with_code rust:1.54.0 \
+            docker run --volumes-from with_code rust:1.56.1 \
               /bin/bash -e -c 'export GLOBIGNORE="../../artifacts/floaty.wasm"; cd ./code/packages/vm; ./examples/check_contract.sh ../../artifacts/*.wasm'
             docker cp with_code:/code/artifacts .
       - run:
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c23cc2e143..53e11d7cb3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -33,7 +33,7 @@ jobs:
       - name: Install Rust
         uses: actions-rs/toolchain@v1
         with:
-          toolchain: 1.54.0
+          toolchain: 1.56.1
           target: wasm32-unknown-unknown
           profile: minimal
           override: true
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 97e3ee30f8..4d10f69646 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,10 @@ and this project adheres to
 
 [#1226]: https://github.com/CosmWasm/cosmwasm/issues/1226
 
+### Changed
+
+- all: Drop support for Rust versions lower than 1.56.1.
+
 ## [0.16.6] - 2022-03-21
 
 ### Added
diff --git a/Cargo.lock b/Cargo.lock
index 98cc98d671..5c425b3e68 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -787,6 +787,15 @@ dependencies = [
  "ahash",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c21d40587b92fa6a6c6e3c1bdbf87d75511db5672f9c93175574b3a00df1758"
+dependencies = [
+ "ahash",
+]
+
 [[package]]
 name = "hermit-abi"
 version = "0.1.19"
@@ -831,7 +840,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bc633605454125dec4b66843673f01c7df2b89479b32e0ed634e43a91cff62a5"
 dependencies = [
  "autocfg",
- "hashbrown",
+ "hashbrown 0.11.2",
  "serde",
 ]
 
@@ -1032,7 +1041,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40bec70ba014595f99f7aa110b84331ffe1ee9aece7fe6f387cc7e3ecda4d456"
 dependencies = [
  "crc32fast",
- "hashbrown",
+ "hashbrown 0.11.2",
  "indexmap",
  "memchr",
 ]
@@ -1320,12 +1329,12 @@ dependencies = [
 
 [[package]]
 name = "rkyv"
-version = "0.7.31"
+version = "0.7.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "439655b8d657bcb28264da8e5380d55549e34ffc4149bea9e3521890a122a7bd"
+checksum = "1f08c8062c1fe1253064043b8fc07bfea1b9702b71b4a86c11ea3588183b12e1"
 dependencies = [
  "bytecheck",
- "hashbrown",
+ "hashbrown 0.12.0",
  "ptr_meta",
  "rend",
  "rkyv_derive",
@@ -1334,9 +1343,9 @@ dependencies = [
 
 [[package]]
 name = "rkyv_derive"
-version = "0.7.31"
+version = "0.7.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cded413ad606a80291ca84bedba137093807cf4f5b36be8c60f57a7e790d48f6"
+checksum = "e289706df51226e84814bf6ba1a9e1013112ae29bc7a9878f73fce360520c403"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1686,9 +1695,9 @@ checksum = "879f6906492a7cd215bfa4cf595b600146ccfac0c79bcbd1f3000162af5e8b06"
 
 [[package]]
 name = "uint"
-version = "0.9.1"
+version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6470ab50f482bde894a037a57064480a246dbfdd5960bd65a44824693f08da5f"
+checksum = "12f03af7ccf01dd611cc450a0d10dbc9b745770d096473e2faf0ca6e2d66d1e0"
 dependencies = [
  "byteorder",
  "crunchy",
diff --git a/contracts/burner/Cargo.lock b/contracts/burner/Cargo.lock
index 0c73537248..2ef7e4efc6 100644
--- a/contracts/burner/Cargo.lock
+++ b/contracts/burner/Cargo.lock
@@ -632,6 +632,15 @@ dependencies = [
  "ahash",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c21d40587b92fa6a6c6e3c1bdbf87d75511db5672f9c93175574b3a00df1758"
+dependencies = [
+ "ahash",
+]
+
 [[package]]
 name = "hermit-abi"
 version = "0.1.19"
@@ -670,7 +679,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bc633605454125dec4b66843673f01c7df2b89479b32e0ed634e43a91cff62a5"
 dependencies = [
  "autocfg",
- "hashbrown",
+ "hashbrown 0.11.2",
  "serde",
 ]
 
@@ -834,7 +843,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40bec70ba014595f99f7aa110b84331ffe1ee9aece7fe6f387cc7e3ecda4d456"
 dependencies = [
  "crc32fast",
- "hashbrown",
+ "hashbrown 0.11.2",
  "indexmap",
  "memchr",
 ]
@@ -1067,12 +1076,12 @@ dependencies = [
 
 [[package]]
 name = "rkyv"
-version = "0.7.31"
+version = "0.7.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "439655b8d657bcb28264da8e5380d55549e34ffc4149bea9e3521890a122a7bd"
+checksum = "1f08c8062c1fe1253064043b8fc07bfea1b9702b71b4a86c11ea3588183b12e1"
 dependencies = [
  "bytecheck",
- "hashbrown",
+ "hashbrown 0.12.0",
  "ptr_meta",
  "rend",
  "rkyv_derive",
@@ -1081,9 +1090,9 @@ dependencies = [
 
 [[package]]
 name = "rkyv_derive"
-version = "0.7.31"
+version = "0.7.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cded413ad606a80291ca84bedba137093807cf4f5b36be8c60f57a7e790d48f6"
+checksum = "e289706df51226e84814bf6ba1a9e1013112ae29bc7a9878f73fce360520c403"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1364,9 +1373,9 @@ checksum = "879f6906492a7cd215bfa4cf595b600146ccfac0c79bcbd1f3000162af5e8b06"
 
 [[package]]
 name = "uint"
-version = "0.9.1"
+version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6470ab50f482bde894a037a57064480a246dbfdd5960bd65a44824693f08da5f"
+checksum = "12f03af7ccf01dd611cc450a0d10dbc9b745770d096473e2faf0ca6e2d66d1e0"
 dependencies = [
  "byteorder",
  "crunchy",
diff --git a/contracts/crypto-verify/Cargo.lock b/contracts/crypto-verify/Cargo.lock
index 7f1f60d88c..c12d00ed53 100644
--- a/contracts/crypto-verify/Cargo.lock
+++ b/contracts/crypto-verify/Cargo.lock
@@ -659,6 +659,15 @@ dependencies = [
  "ahash",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c21d40587b92fa6a6c6e3c1bdbf87d75511db5672f9c93175574b3a00df1758"
+dependencies = [
+ "ahash",
+]
+
 [[package]]
 name = "hermit-abi"
 version = "0.1.19"
@@ -703,7 +712,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bc633605454125dec4b66843673f01c7df2b89479b32e0ed634e43a91cff62a5"
 dependencies = [
  "autocfg",
- "hashbrown",
+ "hashbrown 0.11.2",
  "serde",
 ]
 
@@ -873,7 +882,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40bec70ba014595f99f7aa110b84331ffe1ee9aece7fe6f387cc7e3ecda4d456"
 dependencies = [
  "crc32fast",
- "hashbrown",
+ "hashbrown 0.11.2",
  "indexmap",
  "memchr",
 ]
@@ -1106,12 +1115,12 @@ dependencies = [
 
 [[package]]
 name = "rkyv"
-version = "0.7.31"
+version = "0.7.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "439655b8d657bcb28264da8e5380d55549e34ffc4149bea9e3521890a122a7bd"
+checksum = "1f08c8062c1fe1253064043b8fc07bfea1b9702b71b4a86c11ea3588183b12e1"
 dependencies = [
  "bytecheck",
- "hashbrown",
+ "hashbrown 0.12.0",
  "ptr_meta",
  "rend",
  "rkyv_derive",
@@ -1120,9 +1129,9 @@ dependencies = [
 
 [[package]]
 name = "rkyv_derive"
-version = "0.7.31"
+version = "0.7.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cded413ad606a80291ca84bedba137093807cf4f5b36be8c60f57a7e790d48f6"
+checksum = "e289706df51226e84814bf6ba1a9e1013112ae29bc7a9878f73fce360520c403"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1431,9 +1440,9 @@ checksum = "879f6906492a7cd215bfa4cf595b600146ccfac0c79bcbd1f3000162af5e8b06"
 
 [[package]]
 name = "uint"
-version = "0.9.1"
+version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6470ab50f482bde894a037a57064480a246dbfdd5960bd65a44824693f08da5f"
+checksum = "12f03af7ccf01dd611cc450a0d10dbc9b745770d096473e2faf0ca6e2d66d1e0"
 dependencies = [
  "byteorder",
  "crunchy",
diff --git a/contracts/floaty/Cargo.lock b/contracts/floaty/Cargo.lock
index c9f8c36fdc..a4794f103e 100644
--- a/contracts/floaty/Cargo.lock
+++ b/contracts/floaty/Cargo.lock
@@ -643,6 +643,15 @@ dependencies = [
  "ahash",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c21d40587b92fa6a6c6e3c1bdbf87d75511db5672f9c93175574b3a00df1758"
+dependencies = [
+ "ahash",
+]
+
 [[package]]
 name = "hermit-abi"
 version = "0.1.19"
@@ -681,7 +690,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bc633605454125dec4b66843673f01c7df2b89479b32e0ed634e43a91cff62a5"
 dependencies = [
  "autocfg",
- "hashbrown",
+ "hashbrown 0.11.2",
  "serde",
 ]
 
@@ -845,7 +854,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40bec70ba014595f99f7aa110b84331ffe1ee9aece7fe6f387cc7e3ecda4d456"
 dependencies = [
  "crc32fast",
- "hashbrown",
+ "hashbrown 0.11.2",
  "indexmap",
  "memchr",
 ]
@@ -1078,12 +1087,12 @@ dependencies = [
 
 [[package]]
 name = "rkyv"
-version = "0.7.31"
+version = "0.7.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "439655b8d657bcb28264da8e5380d55549e34ffc4149bea9e3521890a122a7bd"
+checksum = "1f08c8062c1fe1253064043b8fc07bfea1b9702b71b4a86c11ea3588183b12e1"
 dependencies = [
  "bytecheck",
- "hashbrown",
+ "hashbrown 0.12.0",
  "ptr_meta",
  "rend",
  "rkyv_derive",
@@ -1092,9 +1101,9 @@ dependencies = [
 
 [[package]]
 name = "rkyv_derive"
-version = "0.7.31"
+version = "0.7.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cded413ad606a80291ca84bedba137093807cf4f5b36be8c60f57a7e790d48f6"
+checksum = "e289706df51226e84814bf6ba1a9e1013112ae29bc7a9878f73fce360520c403"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1375,9 +1384,9 @@ checksum = "879f6906492a7cd215bfa4cf595b600146ccfac0c79bcbd1f3000162af5e8b06"
 
 [[package]]
 name = "uint"
-version = "0.9.1"
+version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6470ab50f482bde894a037a57064480a246dbfdd5960bd65a44824693f08da5f"
+checksum = "12f03af7ccf01dd611cc450a0d10dbc9b745770d096473e2faf0ca6e2d66d1e0"
 dependencies = [
  "byteorder",
  "crunchy",
diff --git a/contracts/floaty/Cargo.toml b/contracts/floaty/Cargo.toml
index 0ef1a58beb..66ae2e52ad 100644
--- a/contracts/floaty/Cargo.toml
+++ b/contracts/floaty/Cargo.toml
@@ -39,4 +39,4 @@ thiserror = "1.0"
 [dev-dependencies]
 cosmwasm-schema = { path = "../../packages/schema" }
 cosmwasm-storage = { path = "../../packages/storage" }
-cosmwasm-vm = { path = "../../packages/vm", default-features = false }
+cosmwasm-vm = { path = "../../packages/vm", default-features = false, features = ["iterator"] }
diff --git a/contracts/floaty/tests/integration.rs b/contracts/floaty/tests/integration.rs
new file mode 100644
index 0000000000..5d3de04e58
--- /dev/null
+++ b/contracts/floaty/tests/integration.rs
@@ -0,0 +1,12 @@
+use cosmwasm_vm::testing::mock_instance;
+
+// This line will test the output of cargo wasm
+static WASM: &[u8] = include_bytes!("../target/wasm32-unknown-unknown/release/floaty.wasm");
+// You can uncomment this line instead to test productionified build from rust-optimizer
+// static WASM: &[u8] = include_bytes!("../contract.wasm");
+
+#[test]
+#[should_panic(expected = "Float operator detected")]
+fn instantiate_fails() {
+    let mut _deps = mock_instance(WASM, &[]);
+}
diff --git a/contracts/hackatom/Cargo.lock b/contracts/hackatom/Cargo.lock
index c55cc875a5..6762976894 100644
--- a/contracts/hackatom/Cargo.lock
+++ b/contracts/hackatom/Cargo.lock
@@ -643,6 +643,15 @@ dependencies = [
  "ahash",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c21d40587b92fa6a6c6e3c1bdbf87d75511db5672f9c93175574b3a00df1758"
+dependencies = [
+ "ahash",
+]
+
 [[package]]
 name = "hermit-abi"
 version = "0.1.19"
@@ -681,7 +690,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bc633605454125dec4b66843673f01c7df2b89479b32e0ed634e43a91cff62a5"
 dependencies = [
  "autocfg",
- "hashbrown",
+ "hashbrown 0.11.2",
  "serde",
 ]
 
@@ -845,7 +854,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40bec70ba014595f99f7aa110b84331ffe1ee9aece7fe6f387cc7e3ecda4d456"
 dependencies = [
  "crc32fast",
- "hashbrown",
+ "hashbrown 0.11.2",
  "indexmap",
  "memchr",
 ]
@@ -1078,12 +1087,12 @@ dependencies = [
 
 [[package]]
 name = "rkyv"
-version = "0.7.31"
+version = "0.7.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "439655b8d657bcb28264da8e5380d55549e34ffc4149bea9e3521890a122a7bd"
+checksum = "1f08c8062c1fe1253064043b8fc07bfea1b9702b71b4a86c11ea3588183b12e1"
 dependencies = [
  "bytecheck",
- "hashbrown",
+ "hashbrown 0.12.0",
  "ptr_meta",
  "rend",
  "rkyv_derive",
@@ -1092,9 +1101,9 @@ dependencies = [
 
 [[package]]
 name = "rkyv_derive"
-version = "0.7.31"
+version = "0.7.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cded413ad606a80291ca84bedba137093807cf4f5b36be8c60f57a7e790d48f6"
+checksum = "e289706df51226e84814bf6ba1a9e1013112ae29bc7a9878f73fce360520c403"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1375,9 +1384,9 @@ checksum = "879f6906492a7cd215bfa4cf595b600146ccfac0c79bcbd1f3000162af5e8b06"
 
 [[package]]
 name = "uint"
-version = "0.9.1"
+version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6470ab50f482bde894a037a57064480a246dbfdd5960bd65a44824693f08da5f"
+checksum = "12f03af7ccf01dd611cc450a0d10dbc9b745770d096473e2faf0ca6e2d66d1e0"
 dependencies = [
  "byteorder",
  "crunchy",
diff --git a/contracts/ibc-reflect-send/Cargo.lock b/contracts/ibc-reflect-send/Cargo.lock
index dfc0607209..8b40a13a9c 100644
--- a/contracts/ibc-reflect-send/Cargo.lock
+++ b/contracts/ibc-reflect-send/Cargo.lock
@@ -629,6 +629,15 @@ dependencies = [
  "ahash",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c21d40587b92fa6a6c6e3c1bdbf87d75511db5672f9c93175574b3a00df1758"
+dependencies = [
+ "ahash",
+]
+
 [[package]]
 name = "hermit-abi"
 version = "0.1.19"
@@ -679,7 +688,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bc633605454125dec4b66843673f01c7df2b89479b32e0ed634e43a91cff62a5"
 dependencies = [
  "autocfg",
- "hashbrown",
+ "hashbrown 0.11.2",
  "serde",
 ]
 
@@ -843,7 +852,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40bec70ba014595f99f7aa110b84331ffe1ee9aece7fe6f387cc7e3ecda4d456"
 dependencies = [
  "crc32fast",
- "hashbrown",
+ "hashbrown 0.11.2",
  "indexmap",
  "memchr",
 ]
@@ -1076,12 +1085,12 @@ dependencies = [
 
 [[package]]
 name = "rkyv"
-version = "0.7.31"
+version = "0.7.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "439655b8d657bcb28264da8e5380d55549e34ffc4149bea9e3521890a122a7bd"
+checksum = "1f08c8062c1fe1253064043b8fc07bfea1b9702b71b4a86c11ea3588183b12e1"
 dependencies = [
  "bytecheck",
- "hashbrown",
+ "hashbrown 0.12.0",
  "ptr_meta",
  "rend",
  "rkyv_derive",
@@ -1090,9 +1099,9 @@ dependencies = [
 
 [[package]]
 name = "rkyv_derive"
-version = "0.7.31"
+version = "0.7.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cded413ad606a80291ca84bedba137093807cf4f5b36be8c60f57a7e790d48f6"
+checksum = "e289706df51226e84814bf6ba1a9e1013112ae29bc7a9878f73fce360520c403"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1373,9 +1382,9 @@ checksum = "879f6906492a7cd215bfa4cf595b600146ccfac0c79bcbd1f3000162af5e8b06"
 
 [[package]]
 name = "uint"
-version = "0.9.1"
+version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6470ab50f482bde894a037a57064480a246dbfdd5960bd65a44824693f08da5f"
+checksum = "12f03af7ccf01dd611cc450a0d10dbc9b745770d096473e2faf0ca6e2d66d1e0"
 dependencies = [
  "byteorder",
  "crunchy",
diff --git a/contracts/ibc-reflect/Cargo.lock b/contracts/ibc-reflect/Cargo.lock
index 06281c781f..a05df69ce1 100644
--- a/contracts/ibc-reflect/Cargo.lock
+++ b/contracts/ibc-reflect/Cargo.lock
@@ -629,6 +629,15 @@ dependencies = [
  "ahash",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c21d40587b92fa6a6c6e3c1bdbf87d75511db5672f9c93175574b3a00df1758"
+dependencies = [
+ "ahash",
+]
+
 [[package]]
 name = "hermit-abi"
 version = "0.1.19"
@@ -679,7 +688,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bc633605454125dec4b66843673f01c7df2b89479b32e0ed634e43a91cff62a5"
 dependencies = [
  "autocfg",
- "hashbrown",
+ "hashbrown 0.11.2",
  "serde",
 ]
 
@@ -843,7 +852,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40bec70ba014595f99f7aa110b84331ffe1ee9aece7fe6f387cc7e3ecda4d456"
 dependencies = [
  "crc32fast",
- "hashbrown",
+ "hashbrown 0.11.2",
  "indexmap",
  "memchr",
 ]
@@ -1076,12 +1085,12 @@ dependencies = [
 
 [[package]]
 name = "rkyv"
-version = "0.7.31"
+version = "0.7.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "439655b8d657bcb28264da8e5380d55549e34ffc4149bea9e3521890a122a7bd"
+checksum = "1f08c8062c1fe1253064043b8fc07bfea1b9702b71b4a86c11ea3588183b12e1"
 dependencies = [
  "bytecheck",
- "hashbrown",
+ "hashbrown 0.12.0",
  "ptr_meta",
  "rend",
  "rkyv_derive",
@@ -1090,9 +1099,9 @@ dependencies = [
 
 [[package]]
 name = "rkyv_derive"
-version = "0.7.31"
+version = "0.7.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cded413ad606a80291ca84bedba137093807cf4f5b36be8c60f57a7e790d48f6"
+checksum = "e289706df51226e84814bf6ba1a9e1013112ae29bc7a9878f73fce360520c403"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1373,9 +1382,9 @@ checksum = "879f6906492a7cd215bfa4cf595b600146ccfac0c79bcbd1f3000162af5e8b06"
 
 [[package]]
 name = "uint"
-version = "0.9.1"
+version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6470ab50f482bde894a037a57064480a246dbfdd5960bd65a44824693f08da5f"
+checksum = "12f03af7ccf01dd611cc450a0d10dbc9b745770d096473e2faf0ca6e2d66d1e0"
 dependencies = [
  "byteorder",
  "crunchy",
diff --git a/contracts/queue/Cargo.lock b/contracts/queue/Cargo.lock
index c3824b43a4..b7a5d0c133 100644
--- a/contracts/queue/Cargo.lock
+++ b/contracts/queue/Cargo.lock
@@ -621,6 +621,15 @@ dependencies = [
  "ahash",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c21d40587b92fa6a6c6e3c1bdbf87d75511db5672f9c93175574b3a00df1758"
+dependencies = [
+ "ahash",
+]
+
 [[package]]
 name = "hermit-abi"
 version = "0.1.19"
@@ -659,7 +668,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bc633605454125dec4b66843673f01c7df2b89479b32e0ed634e43a91cff62a5"
 dependencies = [
  "autocfg",
- "hashbrown",
+ "hashbrown 0.11.2",
  "serde",
 ]
 
@@ -823,7 +832,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40bec70ba014595f99f7aa110b84331ffe1ee9aece7fe6f387cc7e3ecda4d456"
 dependencies = [
  "crc32fast",
- "hashbrown",
+ "hashbrown 0.11.2",
  "indexmap",
  "memchr",
 ]
@@ -1067,12 +1076,12 @@ dependencies = [
 
 [[package]]
 name = "rkyv"
-version = "0.7.31"
+version = "0.7.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "439655b8d657bcb28264da8e5380d55549e34ffc4149bea9e3521890a122a7bd"
+checksum = "1f08c8062c1fe1253064043b8fc07bfea1b9702b71b4a86c11ea3588183b12e1"
 dependencies = [
  "bytecheck",
- "hashbrown",
+ "hashbrown 0.12.0",
  "ptr_meta",
  "rend",
  "rkyv_derive",
@@ -1081,9 +1090,9 @@ dependencies = [
 
 [[package]]
 name = "rkyv_derive"
-version = "0.7.31"
+version = "0.7.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cded413ad606a80291ca84bedba137093807cf4f5b36be8c60f57a7e790d48f6"
+checksum = "e289706df51226e84814bf6ba1a9e1013112ae29bc7a9878f73fce360520c403"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1364,9 +1373,9 @@ checksum = "879f6906492a7cd215bfa4cf595b600146ccfac0c79bcbd1f3000162af5e8b06"
 
 [[package]]
 name = "uint"
-version = "0.9.1"
+version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6470ab50f482bde894a037a57064480a246dbfdd5960bd65a44824693f08da5f"
+checksum = "12f03af7ccf01dd611cc450a0d10dbc9b745770d096473e2faf0ca6e2d66d1e0"
 dependencies = [
  "byteorder",
  "crunchy",
diff --git a/contracts/queue/src/contract.rs b/contracts/queue/src/contract.rs
index 9b8c45f3fa..a6875cfaee 100644
--- a/contracts/queue/src/contract.rs
+++ b/contracts/queue/src/contract.rs
@@ -117,10 +117,8 @@ fn handle_dequeue(deps: DepsMut) -> StdResult<Response> {
         // remove from storage and return old value
         deps.storage.remove(&key);
         res.data = Some(Binary(value));
-        Ok(res)
-    } else {
-        Ok(res)
     }
+    Ok(res)
 }
 
 #[cfg_attr(not(feature = "library"), entry_point)]
diff --git a/contracts/reflect/Cargo.lock b/contracts/reflect/Cargo.lock
index 47158776e7..551898b703 100644
--- a/contracts/reflect/Cargo.lock
+++ b/contracts/reflect/Cargo.lock
@@ -629,6 +629,15 @@ dependencies = [
  "ahash",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c21d40587b92fa6a6c6e3c1bdbf87d75511db5672f9c93175574b3a00df1758"
+dependencies = [
+ "ahash",
+]
+
 [[package]]
 name = "hermit-abi"
 version = "0.1.19"
@@ -667,7 +676,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bc633605454125dec4b66843673f01c7df2b89479b32e0ed634e43a91cff62a5"
 dependencies = [
  "autocfg",
- "hashbrown",
+ "hashbrown 0.11.2",
  "serde",
 ]
 
@@ -831,7 +840,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40bec70ba014595f99f7aa110b84331ffe1ee9aece7fe6f387cc7e3ecda4d456"
 dependencies = [
  "crc32fast",
- "hashbrown",
+ "hashbrown 0.11.2",
  "indexmap",
  "memchr",
 ]
@@ -1077,12 +1086,12 @@ dependencies = [
 
 [[package]]
 name = "rkyv"
-version = "0.7.31"
+version = "0.7.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "439655b8d657bcb28264da8e5380d55549e34ffc4149bea9e3521890a122a7bd"
+checksum = "1f08c8062c1fe1253064043b8fc07bfea1b9702b71b4a86c11ea3588183b12e1"
 dependencies = [
  "bytecheck",
- "hashbrown",
+ "hashbrown 0.12.0",
  "ptr_meta",
  "rend",
  "rkyv_derive",
@@ -1091,9 +1100,9 @@ dependencies = [
 
 [[package]]
 name = "rkyv_derive"
-version = "0.7.31"
+version = "0.7.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cded413ad606a80291ca84bedba137093807cf4f5b36be8c60f57a7e790d48f6"
+checksum = "e289706df51226e84814bf6ba1a9e1013112ae29bc7a9878f73fce360520c403"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1374,9 +1383,9 @@ checksum = "879f6906492a7cd215bfa4cf595b600146ccfac0c79bcbd1f3000162af5e8b06"
 
 [[package]]
 name = "uint"
-version = "0.9.1"
+version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6470ab50f482bde894a037a57064480a246dbfdd5960bd65a44824693f08da5f"
+checksum = "12f03af7ccf01dd611cc450a0d10dbc9b745770d096473e2faf0ca6e2d66d1e0"
 dependencies = [
  "byteorder",
  "crunchy",
diff --git a/contracts/staking/Cargo.lock b/contracts/staking/Cargo.lock
index 45c828d9bf..07eed28215 100644
--- a/contracts/staking/Cargo.lock
+++ b/contracts/staking/Cargo.lock
@@ -635,6 +635,15 @@ dependencies = [
  "ahash",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c21d40587b92fa6a6c6e3c1bdbf87d75511db5672f9c93175574b3a00df1758"
+dependencies = [
+ "ahash",
+]
+
 [[package]]
 name = "hermit-abi"
 version = "0.1.19"
@@ -673,7 +682,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bc633605454125dec4b66843673f01c7df2b89479b32e0ed634e43a91cff62a5"
 dependencies = [
  "autocfg",
- "hashbrown",
+ "hashbrown 0.11.2",
  "serde",
 ]
 
@@ -837,7 +846,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40bec70ba014595f99f7aa110b84331ffe1ee9aece7fe6f387cc7e3ecda4d456"
 dependencies = [
  "crc32fast",
- "hashbrown",
+ "hashbrown 0.11.2",
  "indexmap",
  "memchr",
 ]
@@ -1070,12 +1079,12 @@ dependencies = [
 
 [[package]]
 name = "rkyv"
-version = "0.7.31"
+version = "0.7.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "439655b8d657bcb28264da8e5380d55549e34ffc4149bea9e3521890a122a7bd"
+checksum = "1f08c8062c1fe1253064043b8fc07bfea1b9702b71b4a86c11ea3588183b12e1"
 dependencies = [
  "bytecheck",
- "hashbrown",
+ "hashbrown 0.12.0",
  "ptr_meta",
  "rend",
  "rkyv_derive",
@@ -1084,9 +1093,9 @@ dependencies = [
 
 [[package]]
 name = "rkyv_derive"
-version = "0.7.31"
+version = "0.7.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cded413ad606a80291ca84bedba137093807cf4f5b36be8c60f57a7e790d48f6"
+checksum = "e289706df51226e84814bf6ba1a9e1013112ae29bc7a9878f73fce360520c403"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1401,9 +1410,9 @@ checksum = "879f6906492a7cd215bfa4cf595b600146ccfac0c79bcbd1f3000162af5e8b06"
 
 [[package]]
 name = "uint"
-version = "0.9.1"
+version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6470ab50f482bde894a037a57064480a246dbfdd5960bd65a44824693f08da5f"
+checksum = "12f03af7ccf01dd611cc450a0d10dbc9b745770d096473e2faf0ca6e2d66d1e0"
 dependencies = [
  "byteorder",
  "crunchy",
diff --git a/docs/MSRV.md b/docs/MSRV.md
index f370278442..ca8292dd35 100644
--- a/docs/MSRV.md
+++ b/docs/MSRV.md
@@ -1,53 +1,11 @@
 # Minimum Supported Rust Version (MSRV)
 
-This repository has two independent MSRVs, one for the standard library that is
-compiled into contracts (cosmwasm-std MSRV) and one for the virtual machine
-executing contracts (cosmwasm-vm MSRV). The other packages belong to one of the
-two:
-
-| Crate            | MSRV              |
-| ---------------- | ----------------- |
-| cosmwasm-crypto  | cosmwasm-std MSRV |
-| cosmwasm-derive  | cosmwasm-std MSRV |
-| cosmwasm-schema  | cosmwasm-std MSRV |
-| cosmwasm-std     | cosmwasm-std MSRV |
-| cosmwasm-storage | cosmwasm-std MSRV |
-| cosmwasm-vm      | cosmwasm-vm MSRV  |
-
-The reason for this is that cosmwasm-std has a wider audience than cosmwasm-vm
-and we try to change the MSRV less frequently, allowing contract developers to
-pick their favourite compiler version without getting disrupted. Another reason
-is that cosmwasm-vm depends on [Wasmer], which bump their MSRV frequently.
-Please note that as soon as you start using integration tests for contract
-development, you will depends on the cosmwasm-vm MSRV.
-
-[wasmer]: https://github.com/wasmerio/wasmer
-
-## Latest changes
-
-| Version | cosmwasm-std MSRV | cosmwasm-vm MSRV | Notes                            |
-| ------- | ----------------- | ---------------- | -------------------------------- |
-| 0.16.4  | 1.54.0            | 1.54.0           |                                  |
-| 0.14.0  | 1.51.0            | 1.51.0           | Added support for const generics |
-| 0.13.2  | 1.47.0            | 1.48.0           | Through [Wasmer 1.0.1]           |
-| 0.13.0  | 1.47.0            | 1.47.0           |                                  |
-| 0.11.0  | 1.45.2            | 1.45.2           |                                  |
-
-[wasmer 1.0.1]:
-  https://github.com/wasmerio/wasmer/blob/master/CHANGELOG.md#101---2021-01-12
-
-## Policy
-
-**cosmwasm-std MSRV**
-
-- It must always be at least one minor version behind latest stable. E.g. with
-  stable Rust 1.33.3 it must not exceed 1.32.0.
-- It can be bumped without a semver major release of the crates. However, a
-  minor version bump is required.
-
-**cosmwasm-vm MSRV**
-
-- It can be bumped without a semver major release of the crate. However, a minor
-  version bump is required.
-- It is always higher or equal to cosmwasm-std MSRV because the VM depends on
-  cosmwasm-std and related packages.
+We try to keep the range of supported Rust compiler versions as wide as possible
+to avoid unnecessary inconvenience for contract developers. However, we give up
+all strong MSRV guarantees as the Rust ecosystem currently makes it impossible
+to do so. See e.g.
+
+- https://github.com/rust-lang/api-guidelines/issues/252
+- https://github.com/CosmWasm/cosmwasm/issues/1244
+- https://github.com/wasmerio/wasmer/issues/2819
+- https://github.com/CosmWasm/cosmwasm/issues/1204
diff --git a/packages/std/Cargo.toml b/packages/std/Cargo.toml
index 6454da4e22..6f694c2bb9 100644
--- a/packages/std/Cargo.toml
+++ b/packages/std/Cargo.toml
@@ -33,9 +33,7 @@ stargate = []
 [dependencies]
 base64 = "0.13.0"
 cosmwasm-derive = { path = "../derive", version = "0.16.6" }
-# uint 0.9.2 uses edition2021 for no reason but we don't want to upgrade MSRV that much right now
-# See https://github.com/CosmWasm/cosmwasm/issues/1204
-uint = "=0.9.1"
+uint = "0.9.3"
 serde-json-wasm = { version = "0.3.1" }
 schemars = "0.8.1"
 serde = { version = "1.0.103", default-features = false, features = ["derive", "alloc"] }