diff --git a/Gemfile b/Gemfile
index edd217d..e773847 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,7 +7,7 @@ git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 gem 'rails', '~> 6.1.4.1'
 
 # 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 1f6d243..d31c481 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -153,7 +153,7 @@ GEM
     pg (1.2.3)
     pg (1.2.3-x64-mingw32)
     public_suffix (4.0.6)
-    puma (4.3.10)
+    puma (4.3.12)
       nio4r (~> 2.0)
     racc (1.6.0)
     rack (2.2.3)
@@ -312,7 +312,7 @@ DEPENDENCIES
   image_processing (~> 1.9, >= 1.9.3)
   jbuilder (~> 2.7)
   pg
-  puma (~> 4.1)
+  puma (~> 4.3)
   rails (~> 6.1.4.1)
   sass-rails (>= 6)
   selenium-webdriver