diff --git a/Gemfile b/Gemfile
index 6fdc15d..b16df3b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem 'rails', '~> 6.0.1'
 # 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 c0a6589..95a4660 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -116,19 +116,21 @@ GEM
     mime-types (3.3)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2019.1009)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.13.0)
     msgpack (1.3.1)
     netrc (0.11.0)
-    nio4r (2.5.2)
+    nio4r (2.5.8)
     nokogiri (1.10.5)
       mini_portile2 (~> 2.4.0)
     orm_adapter (0.5.0)
     popper_js (1.14.5)
     public_suffix (4.0.1)
-    puma (4.3.0)
+    puma (4.3.12)
       nio4r (~> 2.0)
     rack (2.0.7)
     rack-proxy (0.6.5)
@@ -247,7 +249,7 @@ DEPENDENCIES
   devise (~> 4.7, >= 4.7.1)
   jbuilder (~> 2.7)
   listen (>= 3.0.5, < 3.2)
-  puma (~> 4.1)
+  puma (~> 4.3)
   rails (~> 6.0.1)
   sass-rails (>= 6)
   selenium-webdriver