diff --git a/.forgejo/workflows/build.yaml b/.forgejo/workflows/build.yaml
index 05c1951..53fee0c 100644
--- a/.forgejo/workflows/build.yaml
+++ b/.forgejo/workflows/build.yaml
@@ -37,5 +37,6 @@ jobs:
         name: Build and push
         run: |
           export BUILDAH_ISOLATION=chroot
+          export _BUILDAH_STARTED_IN_USERNS=""
           ${{ github.workspace }}/builder.sh ${{ env.REGISTRY_IMAGE }}
           buildah push ${{ env.REGISTRY_IMAGE }}
diff --git a/builder.sh b/builder.sh
index a57ea9e..4290763 100755
--- a/builder.sh
+++ b/builder.sh
@@ -9,6 +9,7 @@ NODE_VERSION=22.x
 ctr=$(buildah from "docker.io/library/debian:trixie-20250428")
 mnt=$(buildah mount $ctr)
 
+buildah run $ctr -- apt-get update
 buildah run $ctr -- apt-get install -y --no-install-recommends \
 	buildah \
 	ca-certificates \