diff --git a/src/bci_build/package/basecontainers.py b/src/bci_build/package/basecontainers.py
index 7f26743f7..83a991937 100644
--- a/src/bci_build/package/basecontainers.py
+++ b/src/bci_build/package/basecontainers.py
@@ -266,6 +266,7 @@ def _get_minimal_kwargs(os_version: OsVersion):
     package_list=[
         "osc",
         "expect",
+        "obs-service-format_spec_file",
         "obs-service-source_validator",
         "typescript",
         "git",