diff --git a/Gemfile b/Gemfile
index c888402..7dcbfdc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.0.2', '>= 6.0.2.2'
 # Use postgresql as the database for Active Record
 gem 'pg', '>= 0.18', '< 2.0'
 # 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 344e6bd..ddcefe1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -171,7 +171,7 @@ GEM
     multi_xml (0.6.0)
     multipart-post (2.1.1)
     naught (1.1.0)
-    nio4r (2.5.2)
+    nio4r (2.5.7)
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
     oauth2 (1.4.4)
@@ -197,7 +197,7 @@ GEM
     pagy (3.11.0)
     pg (1.2.3)
     public_suffix (4.0.6)
-    puma (4.3.3)
+    puma (4.3.5)
       nio4r (~> 2.0)
     rack (2.2.2)
     rack-protection (2.1.0)
@@ -339,7 +339,7 @@ DEPENDENCIES
   omniauth-rails_csrf_protection
   pagy (~> 3.5)
   pg (>= 0.18, < 2.0)
-  puma (~> 4.1)
+  puma (~> 4.3)
   rails (~> 6.0.2, >= 6.0.2.2)
   redis
   rspec-rails (~> 4.1.0)