diff --git a/Gemfile.lock b/Gemfile.lock
index 222d34a..a4a45a5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -115,7 +115,7 @@ GEM
       domain_name (~> 0.5)
     httpclient (2.8.3)
     hurley (0.2)
-    json (2.1.0)
+    json (2.3.1)
     jwt (1.5.6)
     kramdown (1.17.0)
     little-plugger (1.1.4)