diff --git a/Gemfile.lock b/Gemfile.lock
index 3b949837..534dbbe7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -224,7 +224,7 @@ GEM
     parser (3.3.0.5)
       ast (~> 2.4.1)
       racc
-    pg (1.5.4)
+    pg (1.5.6)
     postmark (1.24.1)
       json
     postmark-rails (0.22.1)