diff --git a/birthday/Gemfile.lock b/birthday/Gemfile.lock
index a551166..cf1f5a8 100644
--- a/birthday/Gemfile.lock
+++ b/birthday/Gemfile.lock
@@ -51,7 +51,7 @@ GEM
     jquery-rails (2.0.2)
       railties (>= 3.2.0, < 5.0)
       thor (~> 0.14)
-    json (1.7.3)
+    json (1.8.6)
     live_ast (1.0.2)
       live_ast_ruby_parser (>= 0.6.0)
     live_ast_ruby_parser (0.6.4)