diff --git a/.gitignore b/.gitignore
index e69de29..e398d24 100644
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/Gemfile-custom.rb
+/Gemfile.lock
diff --git a/Gemfile b/Gemfile
new file mode 100644
index 0000000..1678987
--- /dev/null
+++ b/Gemfile
@@ -0,0 +1,5 @@
+source 'https://rubygems.org'
+
+gemspec
+
+eval File.read('Gemfile-custom.rb') if File.exist?('Gemfile-custom.rb')