diff --git a/.github/workflows/update-version.yml b/.github/workflows/update-version.yml
index a4e0aa2a2..c2abbbb03 100644
--- a/.github/workflows/update-version.yml
+++ b/.github/workflows/update-version.yml
@@ -32,8 +32,8 @@ jobs:
           install_url: https://releases.nixos.org/nix/nix-2.30.1/install
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
-            substituters = http://cache.nixos.org https://hydra.iohk.io
-            trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ=
+            substituters = http://cache.nixos.org 
+            trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= 
       - name: 'Install Cachix'
         uses: cachix/cachix-action@v14
         with:
diff --git a/package/version b/package/version
index e670da30e..4270f6aa4 100644
--- a/package/version
+++ b/package/version
@@ -1 +1 @@
-0.1.137
+0.1.138
diff --git a/pykwasm/pyproject.toml b/pykwasm/pyproject.toml
index 12d9a1e40..6f0a869b7 100644
--- a/pykwasm/pyproject.toml
+++ b/pykwasm/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "pykwasm"
-version = "0.1.137"
+version = "0.1.138"
 description = ""
 readme = "README.md"
 requires-python = "~=3.10"