diff --git a/Gemfile b/Gemfile
index ebf143d..61f8d2c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.0.0'
 # Use mysql as the database for Active Record
 gem 'mysql2', '>= 0.4.4'
 # Use Puma as the app server
-gem 'puma', '~> 3.11'
+gem 'puma', '~> 3.12'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 # gem 'jbuilder', '~> 2.7'
 # Use Redis adapter to run Action Cable in production
diff --git a/Gemfile.lock b/Gemfile.lock
index 499235b..46318f6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -145,7 +145,7 @@ GEM
     orm_adapter (0.5.0)
     polyamorous (2.3.0)
       activerecord (>= 5.0)
-    puma (3.12.1)
+    puma (3.12.2)
     rack (2.0.7)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -237,7 +237,7 @@ DEPENDENCIES
   devise
   listen (>= 3.0.5, < 3.2)
   mysql2 (>= 0.4.4)
-  puma (~> 3.11)
+  puma (~> 3.12)
   rails (~> 6.0.0)
   seed-fu
   spring