diff --git a/.github/actions/setup-nix/action.yml b/.github/actions/setup-nix/action.yml
index c485152..3a9b5d4 100644
--- a/.github/actions/setup-nix/action.yml
+++ b/.github/actions/setup-nix/action.yml
@@ -111,7 +111,7 @@ runs:
           /Users/runner/hostedtoolcache &
 
     - name: install nix
-      uses: cachix/install-nix-action@1ca7d21a94afc7c957383a2d217460d980de4934 # v31
+      uses: cachix/install-nix-action@8aa03977d8d733052d78f4e008a241fd1dbf36b3 # v31
       with:
         # Use install_url to pin specific Nix version
         # Switched from nix-quick-install-action (single-user) to install-nix-action (multi-user with daemon)