diff --git a/Gemfile b/Gemfile
index 66baec0..d0e8332 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.0.0'
 # Use postgresql as the database for Active Record
 gem 'pg', '>= 0.18', '< 2.0'
 # Use Puma as the app server
-gem 'puma', '~> 3.11'
+gem 'puma', '~> 3.12'
 # Use Active Model has_secure_password
 gem 'bcrypt', '~> 3.1.7'
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 3aa07cd..965ce8c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -129,7 +129,7 @@ GEM
     nokogiri (1.10.5)
       mini_portile2 (~> 2.4.0)
     pg (1.1.4)
-    puma (3.12.1)
+    puma (3.12.6)
     rack (2.0.7)
     rack-accept (0.4.5)
       rack (>= 0.4)
@@ -200,7 +200,7 @@ DEPENDENCIES
   grape-entity
   listen (>= 3.0.5, < 3.2)
   pg (>= 0.18, < 2.0)
-  puma (~> 3.11)
+  puma (~> 3.12)
   rack-cors
   rails (~> 6.0.0)
   spring