diff --git a/gemfiles/4.2.gemfile b/gemfiles/4.2.gemfile
new file mode 100644
index 0000000..8bac430
--- /dev/null
+++ b/gemfiles/4.2.gemfile
@@ -0,0 +1,3 @@
+gem "rails", "~> 4.2.0"
+gem "mongoid", "~> 4.0"
+gem "devise", "~> 3.4"