diff --git a/Gemfile b/Gemfile
index 90015c0..8787470 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,7 +5,7 @@ ruby '2.7.0'
 
 gem 'rails', '~> 6.0.3', '>= 6.0.3.1'
 gem 'mysql2', '>= 0.4.4'
-gem 'puma', '~> 4.1'
+gem 'puma', '~> 4.3'
 gem 'sass-rails', '>= 6'
 gem 'webpacker', '~> 4.0'
 gem 'turbolinks', '~> 5'
diff --git a/Gemfile.lock b/Gemfile.lock
index a5aa86b..033f971 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -99,11 +99,11 @@ GEM
     minitest (5.14.1)
     msgpack (1.3.3)
     mysql2 (0.5.3)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
     public_suffix (4.0.5)
-    puma (4.3.5)
+    puma (4.3.11)
       nio4r (~> 2.0)
     rack (2.2.2)
     rack-proxy (0.6.5)
@@ -204,7 +204,7 @@ DEPENDENCIES
   jbuilder (~> 2.7)
   listen (~> 3.2)
   mysql2 (>= 0.4.4)
-  puma (~> 4.1)
+  puma (~> 4.3)
   rails (~> 6.0.3, >= 6.0.3.1)
   sass-rails (>= 6)
   selenium-webdriver