diff --git a/Gemfile b/Gemfile
index 5141f7a..fef5fc8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -16,7 +16,7 @@ gem 'rails', '~> 6.0.1'
 gem 'letter_opener', group: :development
 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 'bootstrap-sass', '~> 3.4.1'
 gem 'jquery-rails'
diff --git a/Gemfile.lock b/Gemfile.lock
index 468fd00..72e8ee0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -175,7 +175,7 @@ GEM
     polyamorous (2.3.0)
       activerecord (>= 5.0)
     public_suffix (4.0.1)
-    puma (4.3.0)
+    puma (4.3.3)
       nio4r (~> 2.0)
     rack (2.0.7)
     rack-proxy (0.6.5)
@@ -317,7 +317,7 @@ DEPENDENCIES
   letter_opener
   listen (>= 3.0.5, < 3.2)
   pg (>= 0.18, < 2.0)
-  puma (~> 4.1)
+  puma (~> 4.3)
   rails (~> 6.0.1)
   rspec-rails
   sass-rails (>= 6)