diff --git a/api/Dockerfile.prod b/api/Dockerfile.prod
index 01dd0a9..97872e4 100644
--- a/api/Dockerfile.prod
+++ b/api/Dockerfile.prod
@@ -34,6 +34,7 @@ RUN groupadd --system --gid 1001 appgroup \
     && useradd --system --uid 1001 --gid 1001 --no-create-home appuser
 
 COPY --from=builder --chown=appuser:appgroup /app/.venv /app/.venv
+# Explicitly list every source directory — add new top-level dirs here or they won't exist in prod
 COPY --chown=appuser:appgroup app/ ./app/
 COPY --chown=appuser:appgroup alembic/ ./alembic/
 COPY --chown=appuser:appgroup alembic.ini .