diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index 3708023..d545d65 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -16,7 +16,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Setup Nix
-        uses: DeterminateSystems/nix-installer-action@v13
+        uses: DeterminateSystems/nix-installer-action@v20
 
       - name: Update lockfile
         run: nix flake update