diff --git a/.github/workflows/build_static.yml b/.github/workflows/build_static.yml
index 2547c368e..b8fc1b0f9 100644
--- a/.github/workflows/build_static.yml
+++ b/.github/workflows/build_static.yml
@@ -46,7 +46,7 @@ jobs:
         uses: cachix/install-nix-action@V27
 
       - name: Enable Cachix
-        uses: cachix/cachix-action@v14
+        uses: cachix/cachix-action@v15
         # If PR is from a non-collaborator (e. g. dependabot) the secrets are missing and the login to cachix fails.
         continue-on-error: true
         with:
diff --git a/.github/workflows/contracts.yml b/.github/workflows/contracts.yml
index c5881f272..0d5fad542 100644
--- a/.github/workflows/contracts.yml
+++ b/.github/workflows/contracts.yml
@@ -28,7 +28,7 @@ jobs:
         uses: cachix/install-nix-action@V27
 
       - name: Enable Cachix
-        uses: cachix/cachix-action@v14
+        uses: cachix/cachix-action@v15
         # If PR is from a non-collaborator (e. g. dependabot) the secrets are missing and the login to cachix fails.
         continue-on-error: true
         with:
diff --git a/.github/workflows/update_nix.yml b/.github/workflows/update_nix.yml
index 55c654146..f7dfd33f6 100644
--- a/.github/workflows/update_nix.yml
+++ b/.github/workflows/update_nix.yml
@@ -19,7 +19,7 @@ jobs:
       - name: Install Nix
         uses: cachix/install-nix-action@V27
 
-      - uses: cachix/cachix-action@v14
+      - uses: cachix/cachix-action@v15
         with:
           name: espresso-systems-private
           authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"