diff --git a/Gemfile b/Gemfile
index 056f6d9..3708449 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,7 +9,7 @@ gem 'figaro'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3', '~> 1.4'
 # Use Puma as the app server
-gem 'puma', '~> 3.11'
+gem 'puma', '~> 4.3'
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 5'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
diff --git a/Gemfile.lock b/Gemfile.lock
index 18a1e0b..d42ec99 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -56,23 +56,11 @@ GEM
       minitest (~> 5.1)
       tzinfo (~> 1.1)
       zeitwerk (~> 2.1, >= 2.1.8)
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
     bindex (0.8.1)
     bootsnap (1.4.5)
       msgpack (~> 1.0)
     builder (3.2.3)
     byebug (11.0.1)
-    capybara (3.29.0)
-      addressable
-      mini_mime (>= 0.1.3)
-      nokogiri (~> 1.8)
-      rack (>= 1.6.0)
-      rack-test (>= 0.6.3)
-      regexp_parser (~> 1.5)
-      xpath (~> 3.2)
-    childprocess (2.0.0)
-      rake (< 13.0)
     concurrent-ruby (1.1.5)
     crass (1.0.4)
     erubi (1.9.0)
@@ -105,8 +93,8 @@ GEM
     nio4r (2.5.2)
     nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
-    public_suffix (4.0.1)
-    puma (3.12.1)
+    puma (4.3.12)
+      nio4r (~> 2.0)
     rack (2.0.7)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -140,9 +128,7 @@ GEM
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)
       ffi (~> 1.0)
-    regexp_parser (1.6.0)
     ruby_dep (1.5.0)
-    rubyzip (1.3.0)
     sass (3.7.4)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
@@ -154,9 +140,6 @@ GEM
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
-    selenium-webdriver (3.142.4)
-      childprocess (>= 0.5, < 3.0)
-      rubyzip (~> 1.2, >= 1.2.2)
     spring (2.1.0)
     spring-watcher-listen (2.0.1)
       listen (>= 2.7, < 4.0)
@@ -179,15 +162,9 @@ GEM
       activemodel (>= 6.0.0)
       bindex (>= 0.4.0)
       railties (>= 6.0.0)
-    webdrivers (4.1.2)
-      nokogiri (~> 1.6)
-      rubyzip (~> 1.0)
-      selenium-webdriver (>= 3.0, < 4.0)
     websocket-driver (0.7.1)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.4)
-    xpath (3.2.0)
-      nokogiri (~> 1.8)
     zeitwerk (2.1.10)
 
 PLATFORMS
@@ -196,20 +173,17 @@ PLATFORMS
 DEPENDENCIES
   bootsnap (>= 1.4.2)
   byebug
-  capybara (>= 2.15)
   figaro
   jbuilder (~> 2.7)
   listen (>= 3.0.5, < 3.2)
-  puma (~> 3.11)
+  puma (~> 4.3)
   rails (~> 6.0.0)
   sass-rails (~> 5)
-  selenium-webdriver
   spring
   spring-watcher-listen (~> 2.0.0)
   sqlite3 (~> 1.4)
   tzinfo-data
   web-console (>= 3.3.0)
-  webdrivers
 
 RUBY VERSION
    ruby 2.6.3p62