diff --git a/.forgejo/workflows/build-iso.yml b/.forgejo/workflows/build-iso.yml
index 2a79f0f6..63f1a02b 100644
--- a/.forgejo/workflows/build-iso.yml
+++ b/.forgejo/workflows/build-iso.yml
@@ -11,7 +11,7 @@ jobs:
     - name:  "Setup Runner"
       run: |
         apk update
-        apk add git nodejs nix
+        apk add git nodejs nix --repository=http://dl-cdn.alpinelinux.org/alpine/edge/testing/
     - uses: actions/checkout@v3
       with:
         sparse-checkout: |