diff --git a/Gemfile.lock b/Gemfile.lock
index 6254083..70cc876 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -291,7 +291,7 @@ GEM
     parser (3.2.2.3)
       ast (~> 2.4.1)
       racc
-    pg (1.5.3)
+    pg (1.5.9)
     popper_js (2.11.8)
     pry (0.14.2)
       coderay (~> 1.1)