diff --git a/Gemfile.lock b/Gemfile.lock
index b1beb54c..796d6d56 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -298,7 +298,7 @@ GEM
     parser (3.3.4.2)
       ast (~> 2.4.1)
       racc
-    pg (1.5.7)
+    pg (1.5.8)
     protocol-hpack (1.4.3)
     protocol-http (0.26.4)
     protocol-http1 (0.19.0)