diff --git a/Gemfile b/Gemfile
index 05101c3..d4991ff 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.0.3', '>= 6.0.3.4'
 # 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'
 # Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
diff --git a/Gemfile.lock b/Gemfile.lock
index 192ade3..a2ec358 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -102,7 +102,7 @@ GEM
     msgpack (1.3.3)
     msgpack (1.3.3-x64-mingw32)
     msgpack (1.3.3-x86-mingw32)
-    nio4r (2.5.4)
+    nio4r (2.5.8)
     nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     nokogiri (1.10.10-x64-mingw32)
@@ -113,7 +113,7 @@ GEM
     pg (1.2.3-x64-mingw32)
     pg (1.2.3-x86-mingw32)
     public_suffix (4.0.6)
-    puma (4.3.6)
+    puma (4.3.12)
       nio4r (~> 2.0)
     rack (2.2.3)
     rack-proxy (0.6.5)
@@ -204,7 +204,7 @@ DEPENDENCIES
   jbuilder (~> 2.7)
   listen (~> 3.2)
   pg (>= 0.18, < 2.0)
-  puma (~> 4.1)
+  puma (~> 4.3)
   rails (~> 6.0.3, >= 6.0.3.4)
   selenium-webdriver
   turbolinks (~> 5)