diff --git a/aula_models/Dojo_MVC/Gemfile.lock b/aula_models/Dojo_MVC/Gemfile.lock
index a69d7df..2876ffa 100644
--- a/aula_models/Dojo_MVC/Gemfile.lock
+++ b/aula_models/Dojo_MVC/Gemfile.lock
@@ -167,7 +167,7 @@ GEM
     popper_js (1.14.5)
     public_suffix (3.0.3)
     puma (3.12.1)
-    rack (2.0.7)
+    rack (2.0.8)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.3)