diff --git a/.forgejo/workflows/build.yml b/.forgejo/workflows/build.yml
index cdf37e9..927378c 100644
--- a/.forgejo/workflows/build.yml
+++ b/.forgejo/workflows/build.yml
@@ -17,7 +17,9 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Log in to the Forgejo container registry
-        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login git.plexultra.com -u "${{ github.actor }}" --password-stdin
+        # REGISTRY_TOKEN = a Forgejo access token with write:package scope, added
+        # as a repo Actions secret. The auto GITHUB_TOKEN can't push packages.
+        run: echo "${{ secrets.REGISTRY_TOKEN }}" | docker login git.plexultra.com -u "${{ github.repository_owner }}" --password-stdin
 
       - name: Build and push image
         run: |