diff --git a/external/lang b/external/lang
index 4ec2f998..bb4bfcfd 160000
--- a/external/lang
+++ b/external/lang
@@ -1 +1 @@
-Subproject commit 4ec2f99855825743f65eabd715ec77f61c28c5d8
+Subproject commit bb4bfcfd5a22dfc84a1a9f797a43af6804d96b93