diff --git a/Gemfile.lock b/Gemfile.lock
index e38885c..9fcc7cb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -161,7 +161,7 @@ GEM
     parser (3.3.4.0)
       ast (~> 2.4.1)
       racc
-    pg (1.5.6)
+    pg (1.5.7)
     psych (5.1.2)
       stringio
     public_suffix (6.0.0)