diff --git a/Gemfile b/Gemfile
index 5ddbad1..ee3ad10 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,14 +1,14 @@
 source 'https://rubygems.org'
 
-gem 'rails', '4.1.1'
+gem 'rails', '6.1.7.3'
 gem 'uglifier', '>= 1.3.0'
-gem 'coffee-rails', '~> 4.0.0'
-gem 'jquery-rails'
-gem 'jbuilder', '~> 1.2'
+gem 'coffee-rails', '~> 4.2.2'
+gem 'jquery-rails', '>= 4.0.1'
+gem 'jbuilder', '~> 1.5', '>= 1.5.3'
 gem 'spreadsheet'
-gem 'devise'
+gem 'devise', '>= 4.7.0'
 gem 'nokogiri'
-gem 'sass-rails', '~> 4.0.3'
+gem 'sass-rails', '~> 5.0.8'
 gem 'bootstrap-sass', '~> 3.1.1'
 gem 'bootstrap-datepicker-rails'
 gem 'will_paginate', '~> 3.0'