diff --git a/src/lib/confmgt/.may_include b/src/lib/confmgt/.may_include
index d85dbf6904..2564133917 100644
--- a/src/lib/confmgt/.may_include
+++ b/src/lib/confmgt/.may_include
@@ -7,3 +7,5 @@ lib/encoding/*.h
 lib/log/*.h
 lib/malloc/*.h
 lib/string/*.h
+lib/testsupport/*.h
+ext/*.h