diff --git a/.github/workflows/update-flake.yml b/.github/workflows/update-flake.yml
index de341b517..5822c411b 100644
--- a/.github/workflows/update-flake.yml
+++ b/.github/workflows/update-flake.yml
@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@f0fe604f8a612776892427721526b4c7cfb23aba # v31
+      - uses: cachix/install-nix-action@c134e4c9e34bac6cab09cf239815f9339aaaf84e # v31
 
       - uses: DeterminateSystems/update-flake-lock@v27
         with: