diff --git a/Gemfile.lock b/Gemfile.lock
index 1e00bca..4e731a9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -14,7 +14,7 @@ GEM
     device_api (1.0.2)
     diff-lcs (1.3)
     docile (1.1.5)
-    json (2.1.0)
+    json (2.3.1)
     rspec (3.5.0)
       rspec-core (~> 3.5.0)
       rspec-expectations (~> 3.5.0)