diff --git a/Gemfile b/Gemfile
index 008abee..fa8736a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,7 +4,7 @@ git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 gem 'devise'
 gem 'cancancan'
 
-ruby "3.0.4"
+ruby "3.1.2"
 
 # Bundle edge Rails instead: gem "rails", github: "rails/rails", branch: "main"
 gem "rails", "~> 7.0.2.3"
@@ -16,7 +16,7 @@ gem "sprockets-rails"
 gem "mysql2", "~> 0.5"
 
 # Use the Puma web server [https://github.com/puma/puma]
-gem "puma", "~> 5.0"
+gem "puma", git: 'https://github.com/puma/puma', branch: 'master'
 
 # Use JavaScript with ESM import maps [https://github.com/rails/importmap-rails]
 gem "importmap-rails"
diff --git a/Gemfile.lock b/Gemfile.lock
index aef0f01..977c9c1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,3 +1,11 @@
+GIT
+  remote: https://github.com/puma/puma
+  revision: e9f09ba1fe6b168bed7fff59d0bdbfd65351cf9d
+  branch: master
+  specs:
+    puma (5.6.4)
+      nio4r (~> 2.0)
+
 GEM
   remote: https://rubygems.org/
   specs:
@@ -148,8 +156,6 @@ GEM
       racc (~> 1.4)
     orm_adapter (0.5.0)
     public_suffix (4.0.6)
-    puma (5.6.4)
-      nio4r (~> 2.0)
     racc (1.6.0)
     rack (2.2.3)
     rack-test (1.1.0)
@@ -243,7 +249,7 @@ DEPENDENCIES
   importmap-rails
   jbuilder
   mysql2 (~> 0.5)
-  puma (~> 5.0)
+  puma!
   rails (~> 7.0.2.3)
   selenium-webdriver
   sprockets-rails
@@ -254,7 +260,7 @@ DEPENDENCIES
   webdrivers
 
 RUBY VERSION
-   ruby 3.0.3p157
+   ruby 3.1.2p20
 
 BUNDLED WITH
    2.3.6