diff --git a/Gemfile.lock b/Gemfile.lock
index 6db3c26..e72097a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,7 +38,7 @@ GEM
       tzinfo (~> 1.1)
     addressable (2.3.8)
     arel (6.0.2)
-    ast (2.0.0)
+    ast (2.1.0)
     astrolabe (1.3.1)
       parser (~> 2.2)
     bcrypt (3.1.10)