diff --git a/README.md b/README.md
index b5056f3..7c7c6c3 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 [![serverless](http://public.serverless.com/badges/v3.svg)](http://www.serverless.com)  [![npm](https://img.shields.io/npm/v/serverless-ruby-layer.svg)](https://www.npmjs.com/package/serverless-ruby-layer) [![Build Status](https://img.shields.io/circleci/build/github/navarasu/serverless-ruby-layer)](https://circleci.com/gh/navarasu/serverless-ruby-layer) [![Coverage Status](https://coveralls.io/repos/github/navarasu/serverless-ruby-layer/badge.svg?branch=master)](https://coveralls.io/github/navarasu/serverless-ruby-layer?branch=master) [![MIT License](https://img.shields.io/npm/l/serverless-ruby-layer)](https://github.com/navarasu/serverless-ruby-layer/blob/master/LICENSE)
 
-A Serverless Plugin to bundle ruby gems from Gemfile and deploy it to the lambda layer automatically while running `serverless deploy`.
+A Serverless Plugin which bundles ruby gems from Gemfile and deploys them to the lambda layer automatically while running `serverless deploy`.
 
 It auto-configures the AWS lambda layer and RUBY_PATH to all the functions.
 
@@ -71,18 +71,18 @@ custom:
     use_docker: true
   ```
 
-For more details, refer the docs [here](https://navarasu.github.io/serverless-ruby-layer/#/configuration)
+For more detailse refer the docs [here](https://navarasu.github.io/serverless-ruby-layer/#/configuration)
 
 
 ## Usage
 
 Using the custom configuration, the plugin can be utilized for below cases,
-* Using locallly installed bundler for gems which native  extensions  - [Example](https://github.com/navarasu/serverless-ruby-layer/blob/master/examples/basic) - [Docs](https://navarasu.github.io/serverless-ruby-layer/#/use_local_bundler)
-* Using Docker for gems with OS native C extensions or system libraries like `http`, `Nokogiri` - [Example](https://github.com/navarasu/serverless-ruby-layer/blob/master/examples/use_docker) - [Docs](https://navarasu.github.io/serverless-ruby-layer/#/use_docker)
-* Preinstall OS packages (yum packages) for gems which requires OS native system libraries like `pg`, `mysql`, `RMagick` - [Example](https://github.com/navarasu/serverless-ruby-layer/blob/master/examples/use_docker_with_yums) - [Docs](https://navarasu.github.io/serverless-ruby-layer/#/use_docker_with_yums)
-* Using Dockerfile for gems which with other OS Linux image or system libraries and utilities -  [Example](https://github.com/navarasu/serverless-ruby-layer/blob/master/examples/use_docker_file) - [Docs](https://navarasu.github.io/serverless-ruby-layer/#/use_docker_file)
-* Include / Exclude specific functions from layer configuration - [Include Example](https://github.com/navarasu/serverless-ruby-layer/blob/master/examples/include_functions) , [Exclude Example](https://github.com/navarasu/serverless-ruby-layer/blob/master/examples/exclude_functions) - [Docs](https://navarasu.github.io/serverless-ruby-layer/#/include_exclude)
-
+* Using locally installed bundler for gems without any native extensions - [Example](https://github.com/navarasu/serverless-ruby-layer/blob/master/examples/basic) - [Docs](https://navarasu.github.io/serverless-ruby-layer/#/use_local_bundler)
+* Using Docker for gems with OS native C extensions or system libraries like `http`, `Nokogiri` - [Example](https://github.com/navarasu/serverless-ruby-layer/blob/master/examples/use_docker) - [Docs](https://navarasu.github.io/serverless-ruby-layer/#/use-docker)
+* Preinstall OS packages (yum packages) for gems which requires OS native system libraries like `pg`, `mysql`, `RMagick` - [Example](https://github.com/navarasu/serverless-ruby-layer/blob/master/examples/use_docker_with_yums) - [Docs](https://navarasu.github.io/serverless-ruby-layer/#/use-docker-with-yums)
+* Using Dockerfile for gems which with other OS Linux image or system libraries and utilities -  [Example](https://github.com/navarasu/serverless-ruby-layer/blob/master/examples/use-docker-file) - [Docs](https://navarasu.github.io/serverless-ruby-layer/#/use_docker_file)
+* Include / Exclude specific functions from layer configuration - [Include Example](https://github.com/navarasu/serverless-ruby-layer/blob/master/examples/include-functions) , [Exclude Example](https://github.com/navarasu/serverless-ruby-layer/blob/master/examples/exclude-functions) - [Docs](https://navarasu.github.io/serverless-ruby-layer/#/include_exclude)
+* Exclude test and development related gems from layer  - [Example](https://github.com/navarasu/serverless-ruby-layer/blob/master/examples/exclude-dev-test-gems) - [Docs](https://navarasu.github.io/serverless-ruby-layer/#/exclude_dev_test_gems)
 
 ## Contributing
 
@@ -94,4 +94,4 @@ Refer [Guidelines](https://github.com/navarasu/serverless-ruby-layer/blob/master
 
 ## License
 
-[MIT](https://choosealicense.com/licenses/mit/)
\ No newline at end of file
+[MIT](https://choosealicense.com/licenses/mit/)
diff --git a/docs/_sidebar.md b/docs/_sidebar.md
index 0619fa1..ec75ca9 100644
--- a/docs/_sidebar.md
+++ b/docs/_sidebar.md
@@ -8,5 +8,6 @@
   * [Docker with Yums installed](use_docker_with_yums)
   * [Using Custom Dockerfile](use_docker_file)
   * [Include / Exclude functions](include_exclude)
+  * [Exclude test gems / development gems](exclude_dev_test_gems)
 * [Configuration](/configuration.md)
-* [Release Notes](/release_notes.md)
\ No newline at end of file
+* [Release Notes](/release_notes.md)
diff --git a/docs/index.html b/docs/index.html
index a24445f..fc02ee2 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -33,7 +33,8 @@
         '/use_docker': '/usage_examples/use_docker',
         '/use_docker_with_yums': '/usage_examples/use_docker_with_yums',
         '/use_docker_file': '/usage_examples/use_docker_file',
-        '/include_exclude': '/usage_examples/include_exclude'
+        '/include_exclude': '/usage_examples/include_exclude',
+        '/exclude_dev_test_gems': '/usage_examples/exclude_dev_test_gems'
       },
       search: {
         noData: {
diff --git a/docs/release_notes.md b/docs/release_notes.md
index 26492fb..9e6edee 100644
--- a/docs/release_notes.md
+++ b/docs/release_notes.md
@@ -1,5 +1,33 @@
 # Release notes
 
+### [1.4.0](https://www.npmjs.com/package/serverless-ruby-layer/v/1.4.0)
+### Docker Inside Docker Release
+* Replaced docker volume mount with docker cp to support CI (Docker inside Docker) environment.
+* Handled the bundle flag deprecated for bundler version greater than 2.1
+* Added docker related test case to run in circle-ci
+* Improved test coverage to 88 %
+* Documented exclude test and development gem example
+
+### [1.3.0](https://www.npmjs.com/package/serverless-ruby-layer/v/1.3.0)
+#### Specify Functions Release
+* Option to include / exlude functions from attaching layers
+* To reduce layer zip size, the gem cache files are excluded in zipping than removing it from the bundle folder
+ (To avoid unnecessary error while removing and also for upcoming reuse gem options)
+
+### [1.2.1](https://www.npmjs.com/package/serverless-ruby-layer/v/1.2.0)
+#### Validated Release
+* Fixed issue in removing Cache dir #17
+* Handled all edge-case errors and thrown user informative message
+* Added logs message for future issue debugging
+* Added issue template with necessary details
+
+### [1.2.0](https://www.npmjs.com/package/serverless-ruby-layer/v/1.2.0)
+#### Native Libs Release
+* Specify yums to be preinstalled before doing a bundle install for gems with os native extension like pg, mysql.
+* Pack and Deploy native library files to the lambda layer along with gems. for e.g to pack /usr/lib64/libpq.so.5 file for pg.
+* Use docker file to specify custom installation and configuration
+* Added docs and examples
+
 ### [1.1.0](https://www.npmjs.com/package/serverless-ruby-layer/v/1.1.0)
 #### Use-Docker Release
 * Added option to use docker to bundle gem with os specific C extensions
@@ -12,4 +40,4 @@
 #### First Release
 * Auto deploy the gems to AWS layer while doing serverless deploy
 * Also configure the layer to make the gem available to all functions declared in the serverless.yml
-* Uses local bundler to install the gem
\ No newline at end of file
+* Uses local bundler to install the gem
diff --git a/docs/usage_examples/exclude_dev_test_gems.md b/docs/usage_examples/exclude_dev_test_gems.md
new file mode 100644
index 0000000..6946294
--- /dev/null
+++ b/docs/usage_examples/exclude_dev_test_gems.md
@@ -0,0 +1,54 @@
+
+##  Exclude test and development related gems
+
+<!-- tabs:start -->
+
+#### ** Gemfile **
+
+```ruby
+source 'https://rubygems.org'
+gem 'httparty'
+
+group :development do
+  gem 'rubocop'
+end
+
+group :test do
+  gem 'rspec'
+end
+
+```
+
+#### ** serverless.yml **
+
+```yml
+service: basic
+
+plugins:
+  - serverless-ruby-layer
+
+provider:
+  name: aws
+  runtime: ruby2.5
+
+functions:
+  hello:
+    handler: handler.hello
+  ```
+
+#### ** handler.rb **
+
+```ruby
+require 'httparty'
+
+def hello(event:, context:)
+  body = HTTParty.get("https://github.com").body
+
+  { statusCode: 200, body: body }
+end
+
+```
+
+<!-- tabs:end -->
+Running `sls deploy` automatically deploys the required gems as in Gemfile by excluding the test and development related gems by default to AWS lambda layer 
+
diff --git a/docs/usage_examples/main.md b/docs/usage_examples/main.md
index bc87830..53d10de 100644
--- a/docs/usage_examples/main.md
+++ b/docs/usage_examples/main.md
@@ -6,4 +6,4 @@ Using the custom configuration, the plugin can be utilized for below cases,
 * Using Docker for gems with C extensions or system libraries like `http`, `Nokogiri` - [Example](https://github.com/navarasu/serverless-ruby-layer/blob/master/examples/use_docker) - [Docs](use_docker)
 * Preinstall OS packages (yum packages) for gems which requires OS native system libraries like `pg`, `mysql`, `RMagick` - [Example](https://github.com/navarasu/serverless-ruby-layer/blob/master/examples/use_docker_with_yums) - [Docs](use_docker_with_yums)
 * Using Dockerfile for gems which requires other system libraries and configuration -  [Example](https://github.com/navarasu/serverless-ruby-layer/blob/master/examples/use_docker_file) - [Docs](use_docker_file)
-
+* Exclude test and development related gems from layer  - [Example](https://github.com/navarasu/serverless-ruby-layer/blob/master/examples/exclude-dev-test-gems) - [Docs](https://navarasu.github.io/serverless-ruby-layer/#/exclude_dev_test_gems)
diff --git a/examples/exclude-dev-test-gems/Gemfile b/examples/exclude-dev-test-gems/Gemfile
new file mode 100644
index 0000000..027d3b3
--- /dev/null
+++ b/examples/exclude-dev-test-gems/Gemfile
@@ -0,0 +1,10 @@
+source 'https://rubygems.org'
+gem 'httparty'
+
+group :development do
+  gem 'rubocop'
+end
+
+group :test do
+  gem 'rspec'
+end
diff --git a/examples/exclude-dev-test-gems/handler.rb b/examples/exclude-dev-test-gems/handler.rb
new file mode 100644
index 0000000..b29169f
--- /dev/null
+++ b/examples/exclude-dev-test-gems/handler.rb
@@ -0,0 +1,7 @@
+require 'httparty'
+
+def hello(event:, context:)
+  body = HTTParty.get("https://github.com").body
+
+  { statusCode: 200, body: body }
+end
diff --git a/examples/exclude-dev-test-gems/serverless.yml b/examples/exclude-dev-test-gems/serverless.yml
new file mode 100644
index 0000000..7f7c991
--- /dev/null
+++ b/examples/exclude-dev-test-gems/serverless.yml
@@ -0,0 +1,12 @@
+service: basic 
+
+plugins:
+  - serverless-ruby-layer
+
+provider:
+  name: aws
+  runtime: ruby2.5
+
+functions:
+  hello:
+    handler: handler.hello