diff --git a/.bazelrc b/.bazelrc
index be1f29773..ea4c2efcb 100644
--- a/.bazelrc
+++ b/.bazelrc
@@ -16,17 +16,6 @@ test:ci --test_output=errors
 
 # Note [backward compatible options]
 
-# XXX: --incompatible_use_python_toolchains needs a specific setup for
-# each environment if python is provided by the system
-# That's complicated to setup. Bazel is supposed to provide automatic
-# detection utilities, see
-# https://github.com/bazelbuild/bazel/issues/7899
-# But it does not work on windows
-# see: https://github.com/bazelbuild/bazel/issues/7844
-# This is only used in rules_haskell tests, so user won't face this
-# issue.
-build  --incompatible_use_python_toolchains=false
-
 # test environment does not propagate locales by default
 # some tests reads files written in UTF8, we need to propagate the correct
 # environment variables, such as LOCALE_ARCHIVE
diff --git a/.buildkite/bazel-sha256 b/.buildkite/bazel-sha256
index b2d2b1afc..396d61d5d 100644
--- a/.buildkite/bazel-sha256
+++ b/.buildkite/bazel-sha256
@@ -1 +1 @@
-6564a9ccb2ab4e39696f20254f3c1a900992e849d1307d8abed708bf48acc4ee  bazel
+f54ab5f31b8d7c6a0ce9dee387af45b1d6577ff9625ef6c535896b59cdf8828a  bazel
diff --git a/.buildkite/bazel-version b/.buildkite/bazel-version
index 697f087f3..9084fa2f7 100644
--- a/.buildkite/bazel-version
+++ b/.buildkite/bazel-version
@@ -1 +1 @@
-0.28.0
+1.1.0
diff --git a/.buildkite/bindists-pipeline b/.buildkite/bindists-pipeline
index 6e7df54dd..7147dcc1e 100755
--- a/.buildkite/bindists-pipeline
+++ b/.buildkite/bindists-pipeline
@@ -9,8 +9,6 @@ BAZEL_DIR="$(.buildkite/fetch-bazel-bindist)"
 trap "rm -rf '$BAZEL_DIR'" EXIT
 export PATH="$BAZEL_DIR:$PATH"
 echo "common:ci --build_tag_filters -requires_lz4,-requires_proto,-requires_zlib,-requires_doctest,-requires_c2hs,-requires_threaded_rts,-dont_test_with_bindist" > .bazelrc.local
-# XXX: See .bazelrc [backward compatible options] for the the rational behind this flag
-echo "build --incompatible_use_python_toolchains=false" >> .bazelrc.local
 # XXX: Remove once all rules using `use_default_shell_env = True` have been
 #   converted to using `rules_sh`'s POSIX toolchain.
 echo "build:ci --experimental_strict_action_env" >> .bazelrc.local
diff --git a/.netlify/build.sh b/.netlify/build.sh
index aab7703e6..dc71883d3 100755
--- a/.netlify/build.sh
+++ b/.netlify/build.sh
@@ -23,8 +23,7 @@ mv WORKSPACE.tmp WORKSPACE
 # generation either.
 sed -i 's/vendored_node = "@nixpkgs_nodejs"/vendored_node = None/' WORKSPACE
 
-# XXX: see .bazelrc note [backward compatible options] for rational behind
-# the --incompatible_use_python_toolchains flag
-bazel build --incompatible_use_python_toolchains=false //docs:api_html
+# XXX: Remove --host_force_python=PY2 after updating to Stardoc 0.4.0
+bazel build --host_force_python=PY2 //docs:api_html
 unzip -d public bazel-bin/docs/api_html-skydoc.zip
 cp start public
diff --git a/.netlify/install.sh b/.netlify/install.sh
index 9456f97b5..a9ff9b48c 100755
--- a/.netlify/install.sh
+++ b/.netlify/install.sh
@@ -2,13 +2,7 @@
 
 set -eux
 
-# XXX: This should be bazel 0.27
-# However, starting from bazel 0.27, they link with a more recent
-# glibc, they are based on ubuntu 16.04 instead of 14.04.
-# Apparently, netlify does not have the right glibc for now
-# So, using bazel 0.26 is a temporary solution until netlify fix its
-# environment.
-V=0.26.0
+V=1.1.0
 
 curl -LO https://github.com/bazelbuild/bazel/releases/download/$V/bazel-$V-installer-linux-x86_64.sh
 chmod +x bazel-$V-installer-linux-x86_64.sh
diff --git a/WORKSPACE b/WORKSPACE
index 9cbca4a6b..72b1f258c 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -2,18 +2,6 @@ workspace(name = "rules_haskell")
 
 # Subrepositories of rules_haskell
 
-# various examples
-local_repository(
-    name = "rules_haskell_examples",
-    path = "examples",
-)
-
-# code for the tutorial
-local_repository(
-    name = "rules_haskell_tutorial",
-    path = "tutorial",
-)
-
 # hazel, a way to generate bazel libraries from [st/h]ackage
 local_repository(
     name = "ai_formation_hazel",
@@ -79,9 +67,9 @@ haskell_cabal_binary(
     visibility = ["//visibility:public"],
 )
     """,
-    sha256 = "d10e4e43673bff435cf6256145f91fbb60dd37510320fcae56be18ac90af2fee",
-    strip_prefix = "proto-lens-protoc-0.4.0.1",
-    urls = ["http://hackage.haskell.org/package/proto-lens-protoc-0.4.0.1/proto-lens-protoc-0.4.0.1.tar.gz"],
+    sha256 = "161dcee2aed780f62c01522c86afce61721cf89c0143f157efefb1bd1fa1d164",
+    strip_prefix = "proto-lens-protoc-0.5.0.0",
+    urls = ["http://hackage.haskell.org/package/proto-lens-protoc-0.5.0.0/proto-lens-protoc-0.5.0.0.tar.gz"],
 )
 
 load("@rules_haskell//haskell:cabal.bzl", "stack_snapshot")
@@ -101,6 +89,7 @@ stack_snapshot(
         "mtl",
         "process",
         "text",
+        "vector",
         # For tests
         "network",
         "language-c",
@@ -110,12 +99,11 @@ stack_snapshot(
         "hspec-core",
         "lens-family-core",
         "data-default-class",
-        "lens-labels",
         "proto-lens",
         "proto-lens-protoc",
         "lens-family",
     ],
-    snapshot = "lts-13.15",
+    snapshot = "lts-14.4",
     tools = [
         "@alex",
         "@happy",
@@ -135,18 +123,19 @@ load(
     "nixpkgs_cc_configure",
     "nixpkgs_local_repository",
     "nixpkgs_package",
+    "nixpkgs_python_configure",
 )
 
 nixpkgs_package(
     name = "ghc",
-    repository = "@nixpkgs",
+    repository = "@nixpkgs_default",
 )
 
 http_archive(
     name = "com_google_protobuf",
-    sha256 = "03d2e5ef101aee4c2f6ddcf145d2a04926b9c19e7086944df3842b1b8502b783",
-    strip_prefix = "protobuf-3.8.0",
-    urls = ["https://github.com/google/protobuf/archive/v3.8.0.tar.gz"],
+    sha256 = "6adf73fd7f90409e479d6ac86529ade2d45f50494c5c10f539226693cb8fe4f7",
+    strip_prefix = "protobuf-3.10.1",
+    urls = ["https://github.com/google/protobuf/archive/v3.10.1.tar.gz"],
 )
 
 load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps")
@@ -154,7 +143,7 @@ load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps")
 protobuf_deps()  # configure and install zlib for protobuf
 
 nixpkgs_local_repository(
-    name = "nixpkgs",
+    name = "nixpkgs_default",
     nix_file = "//nixpkgs:default.nix",
 )
 
@@ -193,7 +182,7 @@ haskell_register_ghc_nixpkgs(
     haddock_flags = test_haddock_flags,
     locale_archive = "@glibc_locales//:locale-archive",
     repl_ghci_args = test_repl_ghci_args,
-    repository = "@nixpkgs",
+    repository = "@nixpkgs_default",
     version = test_ghc_version,
 )
 
@@ -211,20 +200,24 @@ register_toolchains(
     "//tests:c2hs-toolchain",
     "//tests:doctest-toolchain",
     "//tests:protobuf-toolchain",
-    # XXX: see .bazelrc for discussion, the python toolchain
-    # work in postponed to future bazel version
-    # "//tests:python_toolchain",
 )
 
 nixpkgs_cc_configure(
     nix_file = "//nixpkgs:cc-toolchain.nix",
-    repository = "@nixpkgs",
+    nix_file_deps = ["//nixpkgs:default.nix"],
+    repository = "@nixpkgs_default",
+)
+
+nixpkgs_python_configure(
+    # XXX: Remove python2_attribute_path after updating to Stardoc 0.4.0
+    python2_attribute_path = "python2",
+    repository = "@nixpkgs_default",
 )
 
 nixpkgs_package(
     name = "nixpkgs_zlib",
     attribute_path = "zlib",
-    repository = "@nixpkgs",
+    repository = "@nixpkgs_default",
 )
 
 nixpkgs_package(
@@ -239,43 +232,42 @@ cc_library(
   includes = ["include"],
 )
     """,
-    repository = "@nixpkgs",
+    repository = "@nixpkgs_default",
 )
 
 nixpkgs_package(
     name = "c2hs",
     attribute_path = "haskellPackages.c2hs",
-    repository = "@nixpkgs",
+    repository = "@nixpkgs_default",
 )
 
 nixpkgs_package(
     name = "doctest",
     attribute_path = "haskellPackages.doctest",
-    repository = "@nixpkgs",
+    repository = "@nixpkgs_default",
 )
 
-#nixpkgs_package(
-#    name = "python3",
-#    attribute_path = "python3",
-#    repository = "@nixpkgs",
-#)
+nixpkgs_package(
+    name = "python3",
+    repository = "@nixpkgs_default",
+)
 
 nixpkgs_package(
     name = "sphinx",
-    attribute_path = "python36Packages.sphinx",
-    repository = "@nixpkgs",
+    attribute_path = "python37Packages.sphinx",
+    repository = "@nixpkgs_default",
 )
 
 nixpkgs_package(
     name = "graphviz",
     attribute_path = "graphviz",
-    repository = "@nixpkgs",
+    repository = "@nixpkgs_default",
 )
 
 nixpkgs_package(
     name = "zip",
     attribute_path = "zip",
-    repository = "@nixpkgs",
+    repository = "@nixpkgs_default",
 )
 
 nixpkgs_package(
@@ -295,7 +287,7 @@ cc_library(
     visibility = ["//visibility:public"],
 )
 """,
-    repository = "@nixpkgs",
+    repository = "@nixpkgs_default",
 )
 
 nixpkgs_package(
@@ -309,7 +301,7 @@ filegroup(
     srcs = ["lib/locale/locale-archive"],
 )
 """,
-    repository = "@nixpkgs",
+    repository = "@nixpkgs_default",
 )
 
 http_archive(
@@ -347,13 +339,6 @@ local_repository(
     path = "tests/c2hs/repo",
 )
 
-# python toolchain
-nixpkgs_package(
-    name = "python3",
-    attribute_path = "python3",
-    repository = "@nixpkgs",
-)
-
 load(
     "@rules_haskell//tests/external-haskell-repository:workspace_dummy.bzl",
     "haskell_package_repository_dummy",
@@ -385,22 +370,20 @@ nixpkgs_package(
         "sandbox",
         "false",
     ],
-    repository = "@nixpkgs",
+    repository = "@nixpkgs_default",
 )
 
 http_archive(
     name = "build_bazel_rules_nodejs",
-    sha256 = "f79f605a920145216e64991d6eff4e23babc48810a9efd63a31744bb6637b01e",
-    strip_prefix = "rules_nodejs-b4dad57d2ecc63d74db1f5523593639a635e447d",
-    # Tip of https://github.com/bazelbuild/rules_nodejs/pull/471.
-    urls = ["https://github.com/mboes/rules_nodejs/archive/b4dad57d2ecc63d74db1f5523593639a635e447d.tar.gz"],
+    sha256 = "9901bc17138a79135048fb0c107ee7a56e91815ec6594c08cb9a17b80276d62b",
+    urls = ["https://github.com/bazelbuild/rules_nodejs/releases/download/0.40.0/rules_nodejs-0.40.0.tar.gz"],
 )
 
 http_archive(
     name = "io_bazel_rules_sass",
-    sha256 = "1e135452dc627f52eab39a50f4d5b8d13e8ed66cba2e6da56ac4cbdbd776536c",
-    strip_prefix = "rules_sass-1.15.2",
-    urls = ["https://github.com/bazelbuild/rules_sass/archive/1.15.2.tar.gz"],
+    sha256 = "d5e0c0d16fb52f3dcce5bd7830d92d4813eb01bac0211119e74ec9e65eaf3b86",
+    strip_prefix = "rules_sass-1.23.3",
+    urls = ["https://github.com/bazelbuild/rules_sass/archive/1.23.3.tar.gz"],
 )
 
 load("@io_bazel_rules_sass//:package.bzl", "rules_sass_dependencies")
@@ -419,9 +402,10 @@ node_repositories(
 
 http_archive(
     name = "io_bazel_skydoc",
-    sha256 = "c2d66a0cc7e25d857e480409a8004fdf09072a1bd564d6824441ab2f96448eea",
-    strip_prefix = "skydoc-0.3.0",
-    urls = ["https://github.com/bazelbuild/skydoc/archive/0.3.0.tar.gz"],
+    sha256 = "0f77e715e6cf683548a0af9ab84909e57a8f4609de1e847920444d0434259eb4",
+    # XXX: Update to 0.4.0 and Stardoc, the Skydoc API has been deprecated.
+    strip_prefix = "stardoc-0.3.0",
+    urls = ["https://github.com/bazelbuild/stardoc/archive/0.3.0.tar.gz"],
 )
 
 load("@io_bazel_skydoc//:setup.bzl", "skydoc_repositories")
@@ -432,16 +416,18 @@ skydoc_repositories()
 
 http_archive(
     name = "io_bazel_rules_go",
-    sha256 = "1ad10f384053ae50c050fdec7d595d12427c82c0a27c58f8554deb4437216892",
-    strip_prefix = "rules_go-0.18.7",
-    urls = ["https://github.com/bazelbuild/rules_go/archive/0.18.7.tar.gz"],
+    sha256 = "b9aa86ec08a292b97ec4591cf578e020b35f98e12173bbd4a921f84f583aebd9",
+    urls = [
+        "https://storage.googleapis.com/bazel-mirror/github.com/bazelbuild/rules_go/releases/download/v0.20.2/rules_go-v0.20.2.tar.gz",
+        "https://github.com/bazelbuild/rules_go/releases/download/v0.20.2/rules_go-v0.20.2.tar.gz",
+    ],
 )
 
 http_archive(
     name = "com_github_bazelbuild_buildtools",
-    sha256 = "5ec71602e9b458b01717fab1d37492154c1c12ea83f881c745dbd88e9b2098d8",
-    strip_prefix = "buildtools-0.28.0",
-    urls = ["https://github.com/bazelbuild/buildtools/archive/0.28.0.tar.gz"],
+    sha256 = "f3ef44916e6be705ae862c0520bac6834dd2ff1d4ac7e5abc61fe9f12ce7a865",
+    strip_prefix = "buildtools-0.29.0",
+    urls = ["https://github.com/bazelbuild/buildtools/archive/0.29.0.tar.gz"],
 )
 
 # A repository that generates the Go SDK imports, see ./tools/go_sdk/README
diff --git a/examples/WORKSPACE b/examples/WORKSPACE
index 8567a4e17..f88b9d432 100644
--- a/examples/WORKSPACE
+++ b/examples/WORKSPACE
@@ -21,10 +21,19 @@ load("@rules_haskell//haskell:repositories.bzl", "rules_haskell_toolchains")
 
 rules_haskell_toolchains(version = "8.6.5")
 
-load("@io_tweag_rules_nixpkgs//nixpkgs:nixpkgs.bzl", "nixpkgs_cc_configure")
+load(
+    "@io_tweag_rules_nixpkgs//nixpkgs:nixpkgs.bzl",
+    "nixpkgs_cc_configure",
+    "nixpkgs_python_configure",
+)
 
 nixpkgs_cc_configure(
     nix_file = "@rules_haskell//nixpkgs:cc-toolchain.nix",
+    nix_file_deps = ["@rules_haskell//nixpkgs:default.nix"],
+    repository = "@rules_haskell//nixpkgs:default.nix",
+)
+
+nixpkgs_python_configure(
     repository = "@rules_haskell//nixpkgs:default.nix",
 )
 
diff --git a/haskell/platforms/BUILD.bazel b/haskell/platforms/BUILD.bazel
index 6edf86824..bcad71dfb 100644
--- a/haskell/platforms/BUILD.bazel
+++ b/haskell/platforms/BUILD.bazel
@@ -10,9 +10,9 @@ load(":list.bzl", "declare_config_settings")
 
 declare_config_settings()
 
-constraint_value(
+alias(
     name = "nixpkgs",
-    constraint_setting = "@bazel_tools//tools/cpp:cc_compiler",
+    actual = "@io_tweag_rules_nixpkgs//nixpkgs/constraints:nixpkgs",
     visibility = ["//visibility:public"],
 )
 
diff --git a/haskell/protobuf.bzl b/haskell/protobuf.bzl
index 959857e0f..f56a21dfc 100644
--- a/haskell/protobuf.bzl
+++ b/haskell/protobuf.bzl
@@ -376,7 +376,6 @@ def haskell_proto_toolchain(
           "containers",
           "data-default-class",
           "lens-family",
-          "lens-labels",
           "proto-lens",
           "text",
         ],
diff --git a/haskell/repositories.bzl b/haskell/repositories.bzl
index 24a46ed43..7dcc23f5d 100644
--- a/haskell/repositories.bzl
+++ b/haskell/repositories.bzl
@@ -24,9 +24,9 @@ def rules_haskell_dependencies():
     if "io_tweag_rules_nixpkgs" not in excludes:
         http_archive(
             name = "io_tweag_rules_nixpkgs",
-            sha256 = "5a384daa57b49abf9f0b672852f1a66a3c52aecf9d4d2ac64f6de0fd307690c8",
-            strip_prefix = "rules_nixpkgs-0.5.2",
-            urls = ["https://github.com/tweag/rules_nixpkgs/archive/v0.5.2.tar.gz"],
+            sha256 = "f5af641e16fcff5b24f1a9ba5d93cab5ad26500271df59ede344f1a56fc3b17d",
+            strip_prefix = "rules_nixpkgs-0.6.0",
+            urls = ["https://github.com/tweag/rules_nixpkgs/archive/v0.6.0.tar.gz"],
         )
 
 def haskell_repositories():
diff --git a/hazel/tools/wai.patch b/hazel/tools/wai.patch
index 06f88a80e..62f6178ea 100644
--- a/hazel/tools/wai.patch
+++ b/hazel/tools/wai.patch
@@ -13,10 +13,3 @@ index 2338b45d..8d86747e 100644
  staticAppPieces ss rawPieces req sendResponse = liftIO $ do
      case toPieces rawPieces of
          Just pieces -> checkPieces ss pieces req >>= response
-diff --git "a/\327\247\327\250\327\250\327\250\327\250.html" "b/\327\247\327\250\327\250\327\250\327\250.html"
-deleted file mode 100644
-index 2e52da08..00000000
---- "a/\327\247\327\250\327\250\327\250\327\250.html"
-+++ /dev/null
-@@ -1 +0,0 @@
--<h1>HELLO WORLD</h1>
diff --git a/hazel/workspace.bzl b/hazel/workspace.bzl
index cdb811ff7..7441bdb76 100644
--- a/hazel/workspace.bzl
+++ b/hazel/workspace.bzl
@@ -35,12 +35,12 @@ cc_library(
   ]),
 )
 """,
-        repository = "@nixpkgs",
+        repository = "@nixpkgs_default",
     )
 
     nixpkgs_package(
         name = "postgresql",
-        repository = "@nixpkgs",
+        repository = "@nixpkgs_default",
         build_file_content = """
 package(default_visibility = ["//visibility:public"])
 
diff --git a/nixpkgs/default.nix b/nixpkgs/default.nix
index 6bc30d2b9..272921cba 100644
--- a/nixpkgs/default.nix
+++ b/nixpkgs/default.nix
@@ -1,6 +1,7 @@
 let
-  sha256 = "093n9ci000vlhz700mrkdv7jnx6szgmggl0x0wbr1d0yrg2y7q43";
-  rev = "f612ab79002c546d668c4f4ee3d5321fc814b838";
+  # 2019-11-17
+  sha256 = "0r8dv6p1vhxzv50j50bjvwrq5wi9sg35nkm12ga25pw1lzvv6yr9";
+  rev = "1ee040724a417d9e6e8e28dfd88a0c8c35070689";
 in
 import (fetchTarball {
   inherit sha256;
diff --git a/shell.nix b/shell.nix
index c98bb7f11..67378e2a9 100644
--- a/shell.nix
+++ b/shell.nix
@@ -31,7 +31,7 @@ mkShell {
     # check the start script for problems
     shellcheck
     file
-  ] ++ lib.optionals docTools [graphviz python36Packages.sphinx zip unzip];
+  ] ++ lib.optionals docTools [graphviz python37Packages.sphinx zip unzip];
 
   shellHook = ''
     # Add nix config flags to .bazelrc.local.
diff --git a/start b/start
index a65d20520..927f49f8e 100755
--- a/start
+++ b/start
@@ -6,8 +6,8 @@
 MIN_BAZEL_MAJOR=0
 MIN_BAZEL_MINOR=27
 
-MAX_BAZEL_MAJOR=0
-MAX_BAZEL_MINOR=29
+MAX_BAZEL_MAJOR=1
+MAX_BAZEL_MINOR=1
 
 set -e
 
@@ -192,8 +192,6 @@ build --host_platform=@rules_haskell//haskell/platforms:linux_x86_64_nixpkgs
 run --host_platform=@rules_haskell//haskell/platforms:linux_x86_64_nixpkgs'
 )
 
-build --incompatible_use_python_toolchains=false
-
 # test environment does not propagate locales by default
 # some tests reads files written in UTF8, we need to propagate the correct
 # environment variables, such as LOCALE_ARCHIVE
diff --git a/tests/BUILD.bazel b/tests/BUILD.bazel
index df25a0377..3152b181b 100644
--- a/tests/BUILD.bazel
+++ b/tests/BUILD.bazel
@@ -53,10 +53,10 @@ haskell_proto_toolchain(
         "@stackage//:deepseq",
         "@stackage//:lens-family",
         "@stackage//:lens-family-core",
-        "@stackage//:lens-labels",
         "@stackage//:mtl",
         "@stackage//:proto-lens",
         "@stackage//:text",
+        "@stackage//:vector",
     ],
 )
 
@@ -66,25 +66,6 @@ c2hs_toolchain(
     tags = ["requires_c2hs"],
 )
 
-#py_runtime(
-#    name = "py3_runtime",
-#    testonly = False,
-#    interpreter = "@python3//:bin/python",
-#    python_version = "PY3",
-#    visibility = ["//visibility:public"],
-#)
-#
-#py_runtime_pair(
-#    name = "py_runtime_pair",
-#    py3_runtime = ":py3_runtime",
-#)
-#
-#toolchain(
-#    name = "python_toolchain",
-#    toolchain = ":py_runtime_pair",
-#    toolchain_type = "@bazel_tools//tools/python:toolchain_type",
-#)
-
 rule_test_exe(
     name = "test-binary-simple",
     size = "small",
diff --git a/tutorial/WORKSPACE b/tutorial/WORKSPACE
index 24fd0d974..d4a19aa61 100644
--- a/tutorial/WORKSPACE
+++ b/tutorial/WORKSPACE
@@ -21,9 +21,18 @@ load("@rules_haskell//haskell:repositories.bzl", "rules_haskell_toolchains")
 
 rules_haskell_toolchains(version = "8.6.5")
 
-load("@io_tweag_rules_nixpkgs//nixpkgs:nixpkgs.bzl", "nixpkgs_cc_configure")
+load(
+    "@io_tweag_rules_nixpkgs//nixpkgs:nixpkgs.bzl",
+    "nixpkgs_cc_configure",
+    "nixpkgs_python_configure",
+)
 
 nixpkgs_cc_configure(
     nix_file = "@rules_haskell//nixpkgs:cc-toolchain.nix",
+    nix_file_deps = ["@rules_haskell//nixpkgs:default.nix"],
+    repository = "@rules_haskell//nixpkgs:default.nix",
+)
+
+nixpkgs_python_configure(
     repository = "@rules_haskell//nixpkgs:default.nix",
 )