diff --git a/.gitignore b/.gitignore
index 1f91583..0fcf412 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
+/Gemfile-custom.rb
 /Gemfile.lock
 /tmp/
diff --git a/Gemfile b/Gemfile
index fa75df1..1678987 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,5 @@
 source 'https://rubygems.org'
 
 gemspec
+
+eval File.read('Gemfile-custom.rb') if File.exist?('Gemfile-custom.rb')