diff --git a/Gemfile.lock b/Gemfile.lock
index c67848c..e2c979b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -131,7 +131,7 @@ GEM
     jaro_winkler (1.5.3)
     jbuilder (2.9.1)
       activesupport (>= 4.2.0)
-    json (2.2.0)
+    json (2.3.1)
     jwt (2.2.1)
     launchy (2.4.3)
       addressable (~> 2.3)