diff --git a/.github/workflows/cachix.yml b/.github/workflows/cachix.yml
index 7d2f734aa..effe32173 100644
--- a/.github/workflows/cachix.yml
+++ b/.github/workflows/cachix.yml
@@ -14,7 +14,7 @@ jobs:
       uses: actions/checkout@v3
 
     - name: Install nix
-      uses: cachix/install-nix-action@v20
+      uses: cachix/install-nix-action@v21
 
     - name: Authenticate with Cachix
       uses: cachix/cachix-action@v12