fix in librarian

diff --git a/lib/librarian b/lib/librarian
index 12b5230..cc0a99f 160000 (submodule)
--- a/lib/librarian
+++ b/lib/librarian
@@ -1 +1 @@
-Subproject commit 12b5230d8fdb3ad995e867fb5d58a69e8a627e68
+Subproject commit cc0a99f82b1780ed842188fc22fbe18af6a9bc3b