diff --git a/Gemfile b/Gemfile
index 5aa20d8..8061f07 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,10 +1,7 @@
-source "https://rubygems.org"
+source 'https://rubygems.org'
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
 # Specify your gem's dependencies in request_migrations.gemspec.
 gemspec
 
-gem "sqlite3"
-
-# Start debugger with binding.b [https://github.com/ruby/debug]
-# gem "debug", ">= 1.0.0"
+gem 'sqlite3', '~> 1.4'