diff --git a/Gemfile.lock b/Gemfile.lock
index 603e14d..fbc88a0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -80,7 +80,7 @@ GEM
       activesupport (>= 4.2.0)
     i18n (1.8.5)
       concurrent-ruby (~> 1.0)
-    json (2.2.0)
+    json (2.3.1)
     loofah (2.7.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)