diff --git a/.github/workflows/update-hydra-spec.yaml b/.github/workflows/update-hydra-spec.yaml
index 48e95f30d23..eb885f49d23 100644
--- a/.github/workflows/update-hydra-spec.yaml
+++ b/.github/workflows/update-hydra-spec.yaml
@@ -13,7 +13,7 @@ jobs:
       - name: Install Nix
         uses: DeterminateSystems/nix-installer-action@v1
       - name: Update flake.lock
-        uses: DeterminateSystems/update-flake-lock@vX
+        uses: DeterminateSystems/update-flake-lock@v23
         with:
           inputs: hydra-spec
           token: ${{ secrets.GH_TOKEN_FOR_UPDATES }}