diff --git a/.github/workflows/nix-shell.yml b/.github/workflows/nix-shell.yml
index dfd1a6a6..6dd8d7ad 100644
--- a/.github/workflows/nix-shell.yml
+++ b/.github/workflows/nix-shell.yml
@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v3
         with:
           submodules: true
-      - uses: cachix/install-nix-action@v20
+      - uses: cachix/install-nix-action@v21
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: rrbutani/use-nix-shell-action@v1