fix in librarian

diff --git a/lib/librarian b/lib/librarian
index 7dfc6d9..ae38fc5 160000 (submodule)
--- a/lib/librarian
+++ b/lib/librarian
@@ -1 +1 @@
-Subproject commit 7dfc6d9f0ffa6fa6f66fafca857398ce821d8c0f
+Subproject commit ae38fc513217c9ef8d6d92111679246572b84b4a