diff --git a/README.md b/README.md
index 1454b33..0bf5bfa 100644
--- a/README.md
+++ b/README.md
@@ -119,6 +119,14 @@ Thake a long look at the [`.env`](.env) file, as most
 configuration options for Yarp are there.
 
 
+### Disable dotenv file
+
+For this you need use additional ENV variable `YARP_DISABLE_DOTENV=1`.
+You can provide ENV variables via bash from any file, for example:
+
+    $ export $(cat /any_path/.rbenv-vars | xargs) && export YARP_DISABLE_DOTENV=1 && bundle exec rainbows -c rainbows.rb
+
+
 ### License
 
 Yarp is released under the MIT licence.
diff --git a/config.ru b/config.ru
index 7d516a1..014e293 100644
--- a/config.ru
+++ b/config.ru
@@ -1,8 +1,10 @@
 lib = File.expand_path('../', __FILE__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 
-require 'dotenv'
-Dotenv.load!
+if ENV['YARP_DISABLE_DOTENV'].nil?
+  require 'dotenv'
+  Dotenv.load!
+end
 
 require 'yarp/app'
 require 'yarp/initializers/new_relic'