diff --git a/Gemfile b/Gemfile
index e5dcbc5..7f20487 100644
--- a/Gemfile
+++ b/Gemfile
@@ -35,7 +35,7 @@ gem 'rails_admin-i18n'                      # Use default rails_admin translatio
 # gem 'graphiql-rails', group: :development
 
 # Use Puma as the app server
-gem 'puma', '~> 3.12'
+gem 'puma', '~> 4.3'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 # gem 'jbuilder', '~> 2.5'
 # Use Redis adapter to run Action Cable in production
diff --git a/Gemfile.lock b/Gemfile.lock
index 8e1c3f5..dd976d5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -177,7 +177,8 @@ GEM
     parser (2.7.1.4)
       ast (~> 2.4.1)
     pg (1.2.3)
-    puma (3.12.6)
+    puma (4.3.12)
+      nio4r (~> 2.0)
     rack (2.2.3)
     rack-attack (6.3.1)
       rack (>= 1.0, < 3)
@@ -357,7 +358,7 @@ DEPENDENCIES
   listen (>= 3.0.5, < 3.2)
   mini_magick
   pg
-  puma (~> 3.12)
+  puma (~> 4.3)
   rack-attack
   rack-cors
   rails (~> 6.0.3)