diff --git a/Gemfile.lock b/Gemfile.lock
index 55ea3bc..b8266c0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -116,7 +116,7 @@ GEM
     parallel (1.21.0)
     parser (3.1.0.0)
       ast (~> 2.4.1)
-    pg (1.3.1)
+    pg (1.4.6)
     racc (1.6.0)
     rack (2.2.3)
     rack-test (1.1.0)