diff --git a/Gemfile.lock b/Gemfile.lock
index e0e2cb6..3e1f1e5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -97,7 +97,7 @@ GEM
       thor (~> 0.19.1)
       tilt (~> 2.0.3)
       xcodeproj (~> 1.0)
-    json (2.2.0)
+    json (2.3.1)
     jwt (2.1.0)
     memoist (0.16.1)
     mime-types (3.3)