diff --git a/Gemfile.lock b/Gemfile.lock
index bc05a6a..52565b1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -105,7 +105,8 @@ GEM
     therubyrhino (1.72.8)
     thor (0.14.6)
     tilt (1.3.2)
-    treetop (1.4.9)
+    treetop (1.4.10)
+      polyglot
       polyglot (>= 0.3.1)
     turn (0.8.2)
       ansi (>= 1.2.2)