diff --git a/Gemfile b/Gemfile
index 081a626..004156b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,24 +2,24 @@ source 'https://rubygems.org'
 
 ruby File.read(File.join(__dir__, ".ruby-version"))
 
-gem 'rails', '~> 5.1.4'
+gem 'rails', '~> 5.1.6', '>= 5.1.6.1'
 gem 'pg', '~> 0.18'
 gem 'puma', '~> 3.7'
-gem 'sass-rails', '~> 5.0'
+gem 'sass-rails', '~> 5.0', '>= 5.0.8'
 gem 'uglifier', '>= 1.3.0'
 gem 'bootstrap', '~> 4.1.2'
 gem 'cloudinary'
 
 group :development, :test do
-  gem 'dotenv-rails'
-  gem 'minitest-rails'
+  gem 'dotenv-rails', '>= 2.6.0'
+  gem 'minitest-rails', '>= 5.1.0'
   gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
-  gem 'capybara', '~> 2.13'
+  gem 'capybara', '~> 3.0', '>= 3.0.0'
   gem 'selenium-webdriver'
 end
 
 group :development do
-  gem 'web-console', '>= 3.3.0'
+  gem 'web-console', '>= 4.0.0'
   gem 'listen', '>= 3.0.5', '< 3.2'
   gem 'spring'
   gem 'spring-watcher-listen', '~> 2.0.0'