diff --git a/Gemfile b/Gemfile
index 4859c7f..68b541a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.0.3'
 # Use postgresql 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'
 # Transpile app-like JavaScript. Read more: https://github.com/rails/webpacker
 gem 'webpacker', '~> 4.0'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
diff --git a/Gemfile.lock b/Gemfile.lock
index 77afab1..9e62a47 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -111,13 +111,13 @@ GEM
     mini_portile2 (2.4.0)
     minitest (5.14.0)
     msgpack (1.3.3)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
     orm_adapter (0.5.0)
     pg (1.2.3)
     public_suffix (4.0.5)
-    puma (4.3.3)
+    puma (4.3.12)
       nio4r (~> 2.0)
     rack (2.2.2)
     rack-proxy (0.6.5)
@@ -210,7 +210,7 @@ DEPENDENCIES
   launchy (~> 2.5)
   listen (~> 3.2)
   pg (>= 0.18, < 2.0)
-  puma (~> 4.1)
+  puma (~> 4.3)
   rails (~> 6.0.3)
   redis (~> 4.0)
   selenium-webdriver