diff --git a/_tools/validation/Gemfile.lock b/_tools/validation/Gemfile.lock
index e87a156b..9442a6e6 100644
--- a/_tools/validation/Gemfile.lock
+++ b/_tools/validation/Gemfile.lock
@@ -4,7 +4,7 @@ GEM
     httparty (0.11.0)
       multi_json (~> 1.0)
       multi_xml (>= 0.5.2)
-    json (1.8.0)
+    json (2.3.0)
     multi_json (1.7.7)
     multi_xml (0.5.4)
     paint (0.8.6)