diff --git a/backend/Gemfile.lock b/backend/Gemfile.lock
index 3ffebe8a..db4214a0 100644
--- a/backend/Gemfile.lock
+++ b/backend/Gemfile.lock
@@ -316,7 +316,7 @@ GEM
     parser (3.3.0.5)
       ast (~> 2.4.1)
       racc
-    pg (1.5.6)
+    pg (1.6.3)
     pp (0.6.3)
       prettyprint
     prettyprint (0.2.0)