diff --git a/lib/external/pattern_language b/lib/external/pattern_language
index e5472c11e..ac9ab6ba7 160000
--- a/lib/external/pattern_language
+++ b/lib/external/pattern_language
@@ -1 +1 @@
-Subproject commit e5472c11eb949ccb675614be6bc3bd80ef1df6c5
+Subproject commit ac9ab6ba727500ab1614e6d063797d78cd632222