diff --git a/Gemfile.lock b/Gemfile.lock
index 153680a..99e056f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -26,7 +26,7 @@ GEM
     ffi (1.4.0)
     headless (1.0.1)
     jsmin (1.0.1)
-    json (1.7.7)
+    json (2.3.0)
     libv8 (3.3.10.4)
     libxml-ruby (2.6.0)
     mime-types (1.21)