diff --git a/Gemfile.lock b/Gemfile.lock
index 70106ca72ab..f59671d5003 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,7 +3,7 @@ GEM
   specs:
     addressable (2.8.7)
       public_suffix (>= 2.0.2, < 7.0)
-    ast (2.4.2)
+    ast (2.4.3)
     base64 (0.2.0)
     bigdecimal (3.1.9)
     chunky_png (1.4.0)