diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6e5b80035..98f5935c3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -166,7 +166,7 @@ jobs:
         if: github.ref_type == 'tag'
 
       - name: Install Nix
-        uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b # v27
+        uses: cachix/install-nix-action@9f70348d77d0422624097c4b7a75563948901306 # v29
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
         if: github.ref_type == 'tag'