diff --git a/Gemfile.lock b/Gemfile.lock
index 08640749a0..0173dada2a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -91,7 +91,7 @@ GEM
       sass (~> 3.4)
     jekyll-watch (2.0.0)
       listen (~> 3.0)
-    json (2.1.0)
+    json (2.5.1)
     kramdown (1.16.2)
     libv8 (3.16.14.19)
     liquid (4.0.0)