diff --git a/.github/workflows/build-os-image.yml b/.github/workflows/build-os-image.yml
index cbe0a70e9..bd3bb6377 100644
--- a/.github/workflows/build-os-image.yml
+++ b/.github/workflows/build-os-image.yml
@@ -159,7 +159,12 @@ jobs:
         with:
           ref: ${{ inputs.ref || github.head_ref }}
 
-      - uses: cachix/install-nix-action@v22
+      - uses: cachix/install-nix-action@6ed004b9ccb68dbc28e7c85bee15fa93dbd214ac # v22
+
+      - uses: cachix/cachix-action@6a9a34cdd93d0ae4b4b59fd678660efb08109f2f # v12
+        with:
+          name: katexochen
+          extraPullNames: nix-community
 
       - name: Build
         id: build