diff --git a/Gemfile.lock b/Gemfile.lock
index 6e07a18..82fa1fb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -175,7 +175,7 @@ GEM
     parser (3.3.4.2)
       ast (~> 2.4.1)
       racc
-    pg (1.5.7)
+    pg (1.5.8)
     pry (0.14.2)
       coderay (~> 1.1)
       method_source (~> 1.0)