diff --git a/Gemfile.lock b/Gemfile.lock
index 789f2a4266..6b7bdcb5de 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -367,7 +367,7 @@ GEM
       ast (~> 2.4.1)
       racc
     pdf-core (0.9.0)
-    pg (1.5.4)
+    pg (1.5.5)
     pkg-config (1.5.6)
     prawn (2.4.0)
       pdf-core (~> 0.9.0)