diff --git a/Gemfile b/Gemfile
index 6111750..f4d3e0e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.0.4.4'
 # Use postgresql as the database for Active Record
 gem 'pg', '>= 0.18', '< 2.0'
 # Use Puma as the app server
-gem 'puma', '~> 4.3.9'
+gem 'puma', '~> 4.3.12'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 # gem 'jbuilder', '~> 2.7'
 # Use Active Model has_secure_password
diff --git a/Gemfile.lock b/Gemfile.lock
index 6a3874a..c7e0f3e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -138,7 +138,7 @@ GEM
       mini_portile2 (~> 2.7.0)
       racc (~> 1.4)
     pg (1.2.3)
-    puma (4.3.9)
+    puma (4.3.12)
       nio4r (~> 2.0)
     racc (1.6.0)
     rack (2.2.3)
@@ -211,7 +211,7 @@ DEPENDENCIES
   listen (>= 3.0.5, < 3.2)
   mocha
   pg (>= 0.18, < 2.0)
-  puma (~> 4.3.9)
+  puma (~> 4.3.12)
   rails (~> 6.0.4.4)
   spring
   spring-watcher-listen (~> 2.0.0)