diff --git a/Gemfile.lock b/Gemfile.lock
index 04c8e0a..60c23e9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -138,7 +138,7 @@ GEM
     parser (3.3.3.0)
       ast (~> 2.4.1)
       racc
-    pg (1.5.4)
+    pg (1.5.7)
     psych (5.1.2)
       stringio
     racc (1.8.0)