diff --git a/.github/workflows/nix-ci.yml b/.github/workflows/nix-ci.yml
index 6691d8b..c310aff 100644
--- a/.github/workflows/nix-ci.yml
+++ b/.github/workflows/nix-ci.yml
@@ -12,7 +12,7 @@ jobs:
       - uses: cachix/install-nix-action@v26
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
-      - uses: cachix/cachix-action@v14
+      - uses: cachix/cachix-action@v15
         with:
           name: galois
           authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'