diff --git a/Gemfile.lock b/Gemfile.lock
index 7c3f059c6..66593bad4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -98,8 +98,18 @@ GEM
     execjs (2.7.0)
     faraday (0.9.2)
       multipart-post (>= 1.2, < 3)
+    faraday-http-cache (1.3.1)
+      faraday (~> 0.8)
     ffi (1.9.14)
     formatador (0.2.5)
+    github_changelog_generator (1.14.1)
+      activesupport
+      faraday-http-cache
+      multi_json
+      octokit (~> 4.0)
+      rainbow (>= 2.1)
+      rake (>= 10.0)
+      retriable (~> 2.1)
     globalid (0.3.7)
       activesupport (>= 4.1.0)
     guard (2.14.0)
@@ -176,6 +186,8 @@ GEM
       multi_json (~> 1.3)
       multi_xml (~> 0.5)
       rack (>= 1.2, < 3)
+    octokit (4.4.1)
+      sawyer (~> 0.7.0, >= 0.5.3)
     omniauth (1.3.1)
       hashie (>= 1.2, < 4)
       rack (>= 1.0, < 3)
@@ -256,6 +268,7 @@ GEM
     rb-inotify (0.9.7)
       ffi (>= 0.5.0)
     ref (2.0.0)
+    retriable (2.1.0)
     rubocop (0.42.0)
       parser (>= 2.3.1.1, < 3.0)
       powerpack (~> 0.1)
@@ -272,6 +285,9 @@ GEM
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
+    sawyer (0.7.0)
+      addressable (>= 2.3.5, < 2.5)
+      faraday (~> 0.8, < 0.10)
     scrub_rb (1.0.1)
     selenium-webdriver (2.53.4)
       childprocess (~> 0.5)
@@ -355,6 +371,7 @@ DEPENDENCIES
   email_verifier
   eventmachine
   execjs
+  github_changelog_generator
   guard
   guard-livereload
   htmlentities