diff --git a/.github/workflows/nix_update.yml b/.github/workflows/nix_update.yml
index 40436ba..2afe269 100644
--- a/.github/workflows/nix_update.yml
+++ b/.github/workflows/nix_update.yml
@@ -12,7 +12,7 @@ jobs:
       pull-requests: write
     steps:
       - uses: actions/checkout@v4.1.2
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
       - uses: fregante/setup-git-user@v2
       - run: nix flake update --commit-lock-file
       - run: nix flake check .
diff --git a/.github/workflows/regenerate-go-sri.yml b/.github/workflows/regenerate-go-sri.yml
index 70f0a76..07d9df7 100644
--- a/.github/workflows/regenerate-go-sri.yml
+++ b/.github/workflows/regenerate-go-sri.yml
@@ -37,7 +37,7 @@ jobs:
         with:
           token: ${{secrets.REPO_CONTENT_UPDATE_TOKEN}}
           fetch-depth: 0 # otherwise, you will failed to push refs to dest repo
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
       - uses: DeterminateSystems/magic-nix-cache-action@v8
       - name: re-generate SRI
         run: "nix --extra-experimental-features nix-command --extra-experimental-features flakes run .#generate-sri-default"