diff --git a/lib/external/pattern_language b/lib/external/pattern_language
index 0154e71ac..9a687a536 160000
--- a/lib/external/pattern_language
+++ b/lib/external/pattern_language
@@ -1 +1 @@
-Subproject commit 0154e71aca643c7d526831755b36e86d41ba0ba4
+Subproject commit 9a687a5364ea27aa838f499afedb8e231f238a40