diff --git a/lib/external/pattern_language b/lib/external/pattern_language
index 2eee33914..470d988b6 160000
--- a/lib/external/pattern_language
+++ b/lib/external/pattern_language
@@ -1 +1 @@
-Subproject commit 2eee339144cc09f8bc4d7d0c7f0ccf0e39dfd46b
+Subproject commit 470d988b671d1e1a63c0f007716fc7516af3f2a8