diff --git a/lib/external/pattern_language b/lib/external/pattern_language
index cef412441..9647e3839 160000
--- a/lib/external/pattern_language
+++ b/lib/external/pattern_language
@@ -1 +1 @@
-Subproject commit cef4124410796190cd8707c852e9d8c0b1cae306
+Subproject commit 9647e38395804fd62cb663617bdbed0648f11c57