diff --git a/Gemfile b/Gemfile
index bb28d8e..21464a4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,7 @@ gem "rails", "~> 6.0.1"
 # Use mysql as the database for Active Record
 gem "mysql2", ">= 0.4.4"
 # 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 341dc41..c205a0c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -178,7 +178,7 @@ GEM
     minitest (5.13.0)
     msgpack (1.3.1)
     mysql2 (0.5.3)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.7)
       mini_portile2 (~> 2.4.0)
     orm_adapter (0.5.0)
@@ -194,7 +194,7 @@ GEM
       byebug (~> 11.0)
       pry (~> 0.10)
     public_suffix (4.0.1)
-    puma (4.3.1)
+    puma (4.3.11)
       nio4r (~> 2.0)
     rack (2.0.8)
     rack-proxy (0.6.5)
@@ -353,7 +353,7 @@ DEPENDENCIES
   listen (>= 3.0.5, < 3.2)
   mysql2 (>= 0.4.4)
   pry-byebug
-  puma (~> 4.1)
+  puma (~> 4.3)
   rails (~> 6.0.1)
   rails-i18n
   ransack