diff --git a/Gemfile b/Gemfile
index 12cd12d..a89e2e7 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,7 +6,7 @@ ruby '2.6.3'
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 5.2.3'
 # Use Puma as the app server
-gem 'puma', '~> 3.11'
+gem 'puma', '~> 3.12'
 # Bootstrap 4
 gem 'bootstrap', '~> 4.3.1'
 # JQuery pois o bootstrap precisa
diff --git a/Gemfile.lock b/Gemfile.lock
index 5e92838..43d5b39 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -151,7 +151,7 @@ GEM
     popper_js (1.14.5)
     power_assert (1.1.5)
     public_suffix (4.0.1)
-    puma (3.12.1)
+    puma (3.12.3)
     rack (2.0.7)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -304,7 +304,7 @@ DEPENDENCIES
   listen (>= 3.0.5, < 3.2)
   pg
   popper_js (~> 1.14.5)
-  puma (~> 3.11)
+  puma (~> 3.12)
   rails (~> 5.2.3)
   rails-controller-testing
   rspec-rails (~> 3.8)