diff --git a/Gemfile b/Gemfile
index 60c9fe1..85212a4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,7 +4,7 @@ git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 ruby '2.7.3'
 
 gem 'rails', '6.0.3.7'
-gem 'puma', '~> 4.1'
+gem 'puma', '~> 4.3'
 gem 'webpacker', '~> 4.0'
 gem 'turbolinks', '~> 5'
 gem 'jbuilder', '~> 2.7'
diff --git a/Gemfile.lock b/Gemfile.lock
index 3e08358..71cb544 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -121,12 +121,12 @@ GEM
     minitest (5.14.4)
     msgpack (1.3.3)
     mysql2 (0.5.3)
-    nio4r (2.5.7)
+    nio4r (2.5.8)
     nokogiri (1.11.3)
       mini_portile2 (~> 2.5.0)
       racc (~> 1.4)
     public_suffix (4.0.3)
-    puma (4.3.5)
+    puma (4.3.12)
       nio4r (~> 2.0)
     racc (1.5.2)
     rack (2.2.3)
@@ -222,7 +222,7 @@ DEPENDENCIES
   kaminari
   listen (>= 3.0.5, < 3.2)
   mysql2
-  puma (~> 4.1)
+  puma (~> 4.3)
   rails (= 6.0.3.7)
   selenium-webdriver
   spring