diff --git a/lib/external/pattern_language b/lib/external/pattern_language
index d5604800c..c18906978 160000
--- a/lib/external/pattern_language
+++ b/lib/external/pattern_language
@@ -1 +1 @@
-Subproject commit d5604800c10ed94a162a198e227410796054c167
+Subproject commit c18906978bec280f5e7cef77f9f3d71fc0ccbb0c