diff --git a/Gemfile.lock b/Gemfile.lock
index eaa6a0d..d9da890 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -109,7 +109,7 @@ GEM
     ipaddress (0.8.3)
     jaro_winkler (1.5.3)
     jmespath (1.4.0)
-    json (2.2.0)
+    json (2.3.1)
     kitchen-ec2 (1.3.2)
       aws-sdk (~> 2)
       excon