diff --git a/ShopApp/Gemfile b/ShopApp/Gemfile
index b55f1a0..e96470b 100644
--- a/ShopApp/Gemfile
+++ b/ShopApp/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.0.2', '>= 6.0.2.1'
 # Use pg 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/ShopApp/Gemfile.lock b/ShopApp/Gemfile.lock
index 57f1ca0..03ca8ce 100644
--- a/ShopApp/Gemfile.lock
+++ b/ShopApp/Gemfile.lock
@@ -106,13 +106,13 @@ GEM
     mini_portile2 (2.4.0)
     minitest (5.13.0)
     msgpack (1.3.1)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.7)
       mini_portile2 (~> 2.4.0)
     pg (1.2.1)
     popper_js (1.14.5)
     public_suffix (4.0.2)
-    puma (4.3.1)
+    puma (4.3.9)
       nio4r (~> 2.0)
     rack (2.0.8)
     rack-proxy (0.6.5)
@@ -215,7 +215,7 @@ DEPENDENCIES
   jbuilder (~> 2.7)
   listen (>= 3.0.5, < 3.2)
   pg (>= 0.18, < 2.0)
-  puma (~> 4.1)
+  puma (~> 4.3)
   rails (~> 6.0.2, >= 6.0.2.1)
   sass-rails (>= 6)
   selenium-webdriver