diff --git a/Gemfile.lock b/Gemfile.lock
index bc58d29..6a683a8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -154,7 +154,7 @@ GEM
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
-    json (2.1.0)
+    json (2.2.0)
     kgio (2.11.2)
     launchy (2.4.3)
       addressable (~> 2.3)