diff --git a/Gemfile.lock b/Gemfile.lock
index 1ae8866..06e5c92 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -15,7 +15,7 @@ GEM
     faraday (0.15.3)
       multipart-post (>= 1.2, < 3)
     hashdiff (0.3.8)
-    json (2.2.0)
+    json (2.3.1)
     jwt (2.1.0)
     metaclass (0.0.4)
     minitest (5.11.3)