diff --git a/.github/actions/nix-setup/action.yaml b/.github/actions/nix-setup/action.yaml
index 0bc7f88a..5b7972d5 100644
--- a/.github/actions/nix-setup/action.yaml
+++ b/.github/actions/nix-setup/action.yaml
@@ -11,7 +11,7 @@ runs:
   using: composite
   steps:
     - name: Install Nix package manager
-      uses: DeterminateSystems/nix-installer-action@786fff0690178f1234e4e1fe9b536e94f5433196 # v20
+      uses: DeterminateSystems/nix-installer-action@c5a866b6ab867e88becbed4467b93592bce69f8a # v21
       with:
         extra-conf: |
           experimental-features = nix-command flakes