diff --git a/external/lang b/external/lang
index bb4bfcfd..20d537f1 160000
--- a/external/lang
+++ b/external/lang
@@ -1 +1 @@
-Subproject commit bb4bfcfd5a22dfc84a1a9f797a43af6804d96b93
+Subproject commit 20d537f104c5ae7c9ab508bf6e49a0110435c74d