diff --git a/Gemfile b/Gemfile
index b40c8453..5138e37b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.0.2', '>= 6.0.2.1'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3', '~> 1.4'
 # 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 62cd8d7b..36db473f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -118,7 +118,7 @@ GEM
     multi_xml (0.6.0)
     multipart-post (2.1.1)
     netrc (0.11.0)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
     oauth2 (1.4.3)
@@ -140,7 +140,7 @@ GEM
       oauth2 (~> 1.1)
       omniauth (~> 1.9)
     public_suffix (4.0.3)
-    puma (4.3.1)
+    puma (4.3.12)
       nio4r (~> 2.0)
     rack (2.2.2)
     rack-proxy (0.6.5)
@@ -254,7 +254,7 @@ DEPENDENCIES
   listen (>= 3.0.5, < 3.2)
   omniauth-facebook
   omniauth-google-oauth2
-  puma (~> 4.1)
+  puma (~> 4.3)
   rails (~> 6.0.2, >= 6.0.2.1)
   rest-client
   sass-rails (>= 6)