diff --git a/checkout-after/Gemfile.lock b/checkout-after/Gemfile.lock
index 3f1cf85..426989a 100644
--- a/checkout-after/Gemfile.lock
+++ b/checkout-after/Gemfile.lock
@@ -61,7 +61,7 @@ GEM
     jquery-rails (2.0.2)
       railties (>= 3.2.0, < 5.0)
       thor (~> 0.14)
-    json (1.7.3)
+    json (1.8.6)
     listen (0.4.6)
       rb-fchange (~> 0.0.5)
       rb-fsevent (~> 0.9.1)