diff --git a/lib/external/pattern_language b/lib/external/pattern_language
index 11bb7cc7c..fc84537d5 160000
--- a/lib/external/pattern_language
+++ b/lib/external/pattern_language
@@ -1 +1 @@
-Subproject commit 11bb7cc7ca39c664859860755e370aa6052f44bd
+Subproject commit fc84537d558cc42d51879256428fe40916c91ee8