diff --git a/Gemfile b/Gemfile
index 0159c77..c5f4be1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.0.2', '>= 6.0.2.1'
 # Use postgres as the database for Active Record
 gem 'pg'
 # 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 d32ca65..a0e883b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -150,9 +150,9 @@ GEM
       method_source (~> 0.9.0)
       spoon (~> 0.0)
     public_suffix (4.0.3)
-    puma (4.3.1)
+    puma (4.3.5)
       nio4r (~> 2.0)
-    puma (4.3.1-java)
+    puma (4.3.5-java)
       nio4r (~> 2.0)
     rack (2.2.2)
     rack-cors (1.1.1)
@@ -308,7 +308,7 @@ DEPENDENCIES
   nokogiri
   pg
   pry
-  puma (~> 4.1)
+  puma (~> 4.3)
   rack-cors
   rails (~> 6.0.2, >= 6.0.2.1)
   rspec-rails (~> 3.9)