diff --git a/Gemfile.lock b/Gemfile.lock
index 836d86c..5514b80 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -35,7 +35,7 @@ GEM
     docile (1.1.5)
     ffi (1.11.1)
     gherkin (4.1.3)
-    json (2.1.0)
+    json (2.3.1)
     method_source (0.8.2)
     multi_json (1.12.1)
     multi_test (0.1.2)