diff --git a/lib/external/pattern_language b/lib/external/pattern_language
index b28f6237b..84f4795f9 160000
--- a/lib/external/pattern_language
+++ b/lib/external/pattern_language
@@ -1 +1 @@
-Subproject commit b28f6237b64619e92cc9daa832d1eefa51d000fb
+Subproject commit 84f4795f9e17f661d55c1864acf7eff69f531717