diff --git a/CHANGELOG.md b/CHANGELOG.md
index d4e6fb4d..a1fa2be0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,12 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## [Unreleased] - 2017-12-21
+
+## Fixed
+
+- Removed the `Gemfile.lock` - mostly to acknowledge that it was used only in development and is not really needed.
+
 ## [1.15.1] - 2017-01-26
 
 ## Fixed
@@ -268,6 +274,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 This [gist][gist] did refactor the Jose Valim's code into an `ActiveSupport::Concern`.
 
 [gist]: https://gist.github.com/gonzalo-bulnes/7659739
+[Unreleased]: https://github.com/gonzalo-bulnes/simple_token_authentication/compare/v1.15.1...master
 [1.15.1]: https://github.com/gonzalo-bulnes/simple_token_authentication/compare/v1.15.0...v1.15.1
 [1.15.0]: https://github.com/gonzalo-bulnes/simple_token_authentication/compare/v1.14.0...v1.15.0
 [1.14.0]: https://github.com/gonzalo-bulnes/simple_token_authentication/compare/v1.13.0...v1.14.0
diff --git a/Gemfile.lock b/Gemfile.lock
deleted file mode 100644
index fb189d0a..00000000
--- a/Gemfile.lock
+++ /dev/null
@@ -1,148 +0,0 @@
-PATH
-  remote: .
-  specs:
-    simple_token_authentication (1.15.1)
-      actionmailer (>= 3.2.6, < 6)
-      actionpack (>= 3.2.6, < 6)
-      devise (>= 3.2, < 6)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    actionmailer (5.0.1)
-      actionpack (= 5.0.1)
-      actionview (= 5.0.1)
-      activejob (= 5.0.1)
-      mail (~> 2.5, >= 2.5.4)
-      rails-dom-testing (~> 2.0)
-    actionpack (5.0.1)
-      actionview (= 5.0.1)
-      activesupport (= 5.0.1)
-      rack (~> 2.0)
-      rack-test (~> 0.6.3)
-      rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (5.0.1)
-      activesupport (= 5.0.1)
-      builder (~> 3.1)
-      erubis (~> 2.7.0)
-      rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    activejob (5.0.1)
-      activesupport (= 5.0.1)
-      globalid (>= 0.3.6)
-    activemodel (5.0.1)
-      activesupport (= 5.0.1)
-    activerecord (5.0.1)
-      activemodel (= 5.0.1)
-      activesupport (= 5.0.1)
-      arel (~> 7.0)
-    activesupport (5.0.1)
-      concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (~> 0.7)
-      minitest (~> 5.1)
-      tzinfo (~> 1.1)
-    appraisal (2.1.0)
-      bundler
-      rake
-      thor (>= 0.14.0)
-    arel (7.1.4)
-    bcrypt (3.1.11)
-    bson (4.2.1)
-    builder (3.2.3)
-    coderay (1.1.1)
-    concurrent-ruby (1.0.4)
-    devise (4.2.0)
-      bcrypt (~> 3.0)
-      orm_adapter (~> 0.1)
-      railties (>= 4.1.0, < 5.1)
-      responders
-      warden (~> 1.2.3)
-    diff-lcs (1.2.5)
-    erubis (2.7.0)
-    globalid (0.3.7)
-      activesupport (>= 4.1.0)
-    i18n (0.7.0)
-    inch (0.7.1)
-      pry
-      sparkr (>= 0.2.0)
-      term-ansicolor
-      yard (~> 0.8.7.5)
-    loofah (2.0.3)
-      nokogiri (>= 1.5.9)
-    mail (2.6.4)
-      mime-types (>= 1.16, < 4)
-    method_source (0.8.2)
-    mime-types (3.1)
-      mime-types-data (~> 3.2015)
-    mime-types-data (3.2016.0521)
-    mini_portile2 (2.1.0)
-    minitest (5.10.1)
-    mongo (2.4.1)
-      bson (>= 4.2.1, < 5.0.0)
-    mongoid (6.0.3)
-      activemodel (~> 5.0)
-      mongo (~> 2.3)
-    nokogiri (1.7.0.1)
-      mini_portile2 (~> 2.1.0)
-    orm_adapter (0.5.0)
-    pry (0.10.4)
-      coderay (~> 1.1.0)
-      method_source (~> 0.8.1)
-      slop (~> 3.4)
-    rack (2.0.1)
-    rack-test (0.6.3)
-      rack (>= 1.0)
-    rails-dom-testing (2.0.2)
-      activesupport (>= 4.2.0, < 6.0)
-      nokogiri (~> 1.6)
-    rails-html-sanitizer (1.0.3)
-      loofah (~> 2.0)
-    railties (5.0.1)
-      actionpack (= 5.0.1)
-      activesupport (= 5.0.1)
-      method_source
-      rake (>= 0.8.7)
-      thor (>= 0.18.1, < 2.0)
-    rake (12.0.0)
-    responders (2.3.0)
-      railties (>= 4.2.0, < 5.1)
-    rspec (3.5.0)
-      rspec-core (~> 3.5.0)
-      rspec-expectations (~> 3.5.0)
-      rspec-mocks (~> 3.5.0)
-    rspec-core (3.5.4)
-      rspec-support (~> 3.5.0)
-    rspec-expectations (3.5.0)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.5.0)
-    rspec-mocks (3.5.0)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.5.0)
-    rspec-support (3.5.0)
-    slop (3.6.0)
-    sparkr (0.4.1)
-    term-ansicolor (1.4.0)
-      tins (~> 1.0)
-    thor (0.19.4)
-    thread_safe (0.3.5)
-    tins (1.13.0)
-    tzinfo (1.2.2)
-      thread_safe (~> 0.1)
-    warden (1.2.6)
-      rack (>= 1.0)
-    yard (0.8.7.6)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  activerecord (>= 3.2.6, < 6)
-  appraisal (~> 2.0)
-  inch (~> 0.4)
-  mongoid (>= 3.1.0, < 7)
-  rspec (~> 3.0)
-  simple_token_authentication!
-
-BUNDLED WITH
-   1.13.6