diff --git a/lib/external/pattern_language b/lib/external/pattern_language
index 716dca52b..477228fa1 160000
--- a/lib/external/pattern_language
+++ b/lib/external/pattern_language
@@ -1 +1 @@
-Subproject commit 716dca52beb5499462dd1d1fa8da7564e24091c0
+Subproject commit 477228fa1d8f38b66c89d8f403619fe89cef3d6c