diff --git a/external/lang b/external/lang
index c9cdbea7..c47a2eea 160000
--- a/external/lang
+++ b/external/lang
@@ -1 +1 @@
-Subproject commit c9cdbea7edcb22641b9ea372c85a83ef8e1c1d11
+Subproject commit c47a2eeaad9b6684d8a7c3fe577f0af05a04cc29