diff --git a/Gemfile b/Gemfile
index 06fec53..fc920ff 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,7 +6,7 @@ ruby '2.6.6'
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 6.0.3', '>= 6.0.3.2'
 # Use Puma as the app server
-gem 'puma', '~> 4.1'
+gem 'puma', '~> 4.3'
 # Use SCSS for stylesheets
 gem 'sass-rails', '>= 6'
 # Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
diff --git a/Gemfile.lock b/Gemfile.lock
index e8be6f2..1a52b83 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -314,7 +314,7 @@ GEM
     multi_json (1.15.0)
     nenv (0.3.0)
     netrc (0.11.0)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     nokogiri (1.10.10-x64-mingw32)
@@ -331,7 +331,7 @@ GEM
       coderay (~> 1.1)
       method_source (~> 1.0)
     public_suffix (4.0.5)
-    puma (4.3.5)
+    puma (4.3.11)
       nio4r (~> 2.0)
     rack (2.2.3)
     rack-proxy (0.6.5)
@@ -476,7 +476,7 @@ DEPENDENCIES
   minitest (~> 5.10.3)
   minitest-reporters (~> 1.1.14)
   pg (>= 0.20.0)
-  puma (~> 4.1)
+  puma (~> 4.3)
   rails (~> 6.0.3, >= 6.0.3.2)
   rails-controller-testing (~> 1.0.2)
   sass-rails (>= 6)