diff --git a/.github/workflows/cachix.yml b/.github/workflows/cachix.yml
index 0e789cd..cc79a5e 100644
--- a/.github/workflows/cachix.yml
+++ b/.github/workflows/cachix.yml
@@ -28,7 +28,7 @@ jobs:
           remove-dotnet: true
           remove-haskell: true
       - uses: actions/checkout@v3
-      - uses: cachix/install-nix-action@v18
+      - uses: cachix/install-nix-action@v20
         with:
           extra_nix_config: | 
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}