diff --git a/Gemfile.lock b/Gemfile.lock
index ddaa3de..b641449 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -186,7 +186,7 @@ GEM
       mime-types
       mimemagic (~> 0.3.0)
       terrapin (~> 0.6.0)
-    pg (1.5.7)
+    pg (1.5.8)
     premailer (1.18.0)
       addressable
       css_parser (>= 1.12.0)