diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 02cc8b1f..02b705f0 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -587,7 +587,7 @@ jobs:
           submodules: 'true'
       - name: Install nix
         if: inputs.build_type == 'Debug'
-        uses: cachix/install-nix-action@v20
+        uses: cachix/install-nix-action@v21
         with:
           install_url: https://nixos.org/nix/install
           extra_nix_config: |