diff --git a/Gemfile.lock b/Gemfile.lock
index 67f6b6a..411f2c1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,7 +2,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     ffi (1.10.0)
-    json (2.1.0)
+    json (2.3.0)
     sys-filesystem (1.2.0)
       ffi