diff --git a/.gitea/workflows/base-build.yml b/.gitea/workflows/base-build.yml
index e2306ff..4e46ff9 100644
--- a/.gitea/workflows/base-build.yml
+++ b/.gitea/workflows/base-build.yml
@@ -50,7 +50,7 @@ jobs:
 
       - name: Build all Debian rootfs versions sequentially
         run: |
-          versions=($VERSIONS)
+          export versions=($VERSIONS)
           export OUTPUT_DIR="/mnt/host-output"
           mkdir -p "$OUTPUT_DIR"