diff --git a/Gemfile.lock b/Gemfile.lock
index e150970..4e9c3c2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -31,7 +31,7 @@ GEM
     i18n (1.6.0)
       concurrent-ruby (~> 1.0)
     jaro_winkler (1.5.3)
-    json (2.2.0)
+    json (2.3.1)
     launchy (2.4.3)
       addressable (~> 2.3)
     method_source (0.9.2)