diff --git a/external/lang b/external/lang
index ad350d64..e728942e 160000
--- a/external/lang
+++ b/external/lang
@@ -1 +1 @@
-Subproject commit ad350d64633ead4c636d3cf1be5597c98f4ad006
+Subproject commit e728942ee8968472272e948d04074aacdcf643be