diff --git a/Gemfile.lock b/Gemfile.lock
index e523ca4562c..14517259118 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -330,7 +330,7 @@ GEM
     parser (3.3.6.0)
       ast (~> 2.4.1)
       racc
-    pg (1.5.4)
+    pg (1.5.9)
     prettier_print (1.2.1)
     progress (3.6.0)
     pry (0.14.2)