diff --git a/Gemfile.lock b/Gemfile.lock
index 6efa5cc08..eaa8215dc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -387,7 +387,7 @@ GEM
     thor (0.16.0)
     tilt (1.3.3)
     timecop (0.5.3)
-    treetop (1.4.10)
+    treetop (1.4.12)
       polyglot
       polyglot (>= 0.3.1)
     twitter (4.1.1)