diff --git a/Gemfile.lock b/Gemfile.lock
index 12f09f4..e0ffe3f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -189,7 +189,7 @@ GEM
     parser (3.3.3.0)
       ast (~> 2.4.1)
       racc
-    pg (1.5.6)
+    pg (1.5.8)
     psych (5.1.2)
       stringio
     puma (6.4.2)