diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 7a40ad4b..e61b7eec 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -203,7 +203,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@V27
+      - uses: cachix/install-nix-action@v29
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       - uses: cachix/cachix-action@v15
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index a26aa121..7d1100fc 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -85,7 +85,7 @@ jobs:
     runs-on: ${{matrix.os}}
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@V27
+      - uses: cachix/install-nix-action@v29
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
       - uses: cachix/cachix-action@v15