diff --git a/.github/actions/optimized_build/action.yaml b/.github/actions/optimized_build/action.yaml
index 0dacb05da..7d546757e 100644
--- a/.github/actions/optimized_build/action.yaml
+++ b/.github/actions/optimized_build/action.yaml
@@ -42,7 +42,7 @@ runs:
             fi \
           ) \
         --env RELEASE_VERSION="${RELEASE_VERSION}" \
-        cosmwasm/workspace-optimizer:0.12.12
+        cosmwasm/workspace-optimizer:0.12.13
     - name: "Check for WASM binaries larger than allowed limit"
       shell: "sh"
       run: |
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 9614c0246..c90df2a4b 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,5 +1,5 @@
 [toolchain]
-channel = "1.67" # Update accordingly to cosmwasm/workspace-optimizer's Rust version
+channel = "1.68" # Update accordingly to cosmwasm/workspace-optimizer's Rust version
 targets = [ "wasm32-unknown-unknown" ]
 components = [ "clippy", "rustfmt" ]
 profile = "minimal"