diff --git a/Gemfile.lock b/Gemfile.lock
index ed27b31..dc5335b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,12 +3,12 @@ GEM
   specs:
     addressable (2.3.8)
     ast (2.0.0)
-    astrolabe (1.3.0)
-      parser (>= 2.2.0.pre.3, < 3.0)
+    astrolabe (1.3.1)
+      parser (~> 2.2)
     codeclimate-test-reporter (0.4.7)
       simplecov (>= 0.7.1, < 1.0.0)
     colorize (0.7.7)
-    coveralls (0.8.1)
+    coveralls (0.8.2)
       json (~> 1.8)
       rest-client (>= 1.6.8, < 2)
       simplecov (~> 0.10.0)
@@ -30,14 +30,14 @@ GEM
       multi_json (>= 1.7.5, < 2.0)
       nokogiri (~> 1.6.3)
       oauth2
-    hashie (3.4.1)
+    hashie (3.4.2)
     http-cookie (1.0.2)
       domain_name (~> 0.5)
-    json (1.8.2)
-    jwt (1.5.0)
-    mime-types (2.5)
+    json (1.8.3)
+    jwt (1.5.1)
+    mime-types (2.6.1)
     mini_portile (0.6.2)
-    multi_json (1.11.0)
+    multi_json (1.11.2)
     multi_xml (0.5.5)
     multipart-post (2.0.0)
     netrc (0.10.3)
@@ -49,32 +49,32 @@ GEM
       multi_json (~> 1.3)
       multi_xml (~> 0.5)
       rack (~> 1.2)
-    parser (2.2.2.2)
+    parser (2.2.2.6)
       ast (>= 1.1, < 3.0)
     powerpack (0.1.1)
-    rack (1.6.1)
+    rack (1.6.4)
     rainbow (2.0.0)
     rake (10.4.2)
     rest-client (1.8.0)
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 3.0)
       netrc (~> 0.7)
-    rspec (3.2.0)
-      rspec-core (~> 3.2.0)
-      rspec-expectations (~> 3.2.0)
-      rspec-mocks (~> 3.2.0)
-    rspec-core (3.2.3)
-      rspec-support (~> 3.2.0)
-    rspec-expectations (3.2.1)
+    rspec (3.3.0)
+      rspec-core (~> 3.3.0)
+      rspec-expectations (~> 3.3.0)
+      rspec-mocks (~> 3.3.0)
+    rspec-core (3.3.2)
+      rspec-support (~> 3.3.0)
+    rspec-expectations (3.3.1)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.2.0)
-    rspec-mocks (3.2.1)
+      rspec-support (~> 3.3.0)
+    rspec-mocks (3.3.2)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.2.0)
-    rspec-support (3.2.2)
-    rubocop (0.31.0)
+      rspec-support (~> 3.3.0)
+    rspec-support (3.3.0)
+    rubocop (0.32.1)
       astrolabe (~> 1.3)
-      parser (>= 2.2.2.1, < 3.0)
+      parser (>= 2.2.2.5, < 3.0)
       powerpack (~> 0.1)
       rainbow (>= 1.99.1, < 3.0)
       ruby-progressbar (~> 1.4)
@@ -84,11 +84,11 @@ GEM
       json (~> 1.8)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.0)
-    term-ansicolor (1.3.0)
+    term-ansicolor (1.3.2)
       tins (~> 1.0)
     thor (0.19.1)
     thread_safe (0.3.5)
-    tins (1.5.1)
+    tins (1.5.4)
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.1)
diff --git a/github_changelog_generator.gemspec b/github_changelog_generator.gemspec
index 6f4c59d..2e8ade6 100644
--- a/github_changelog_generator.gemspec
+++ b/github_changelog_generator.gemspec
@@ -24,6 +24,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_runtime_dependency("github_api", ["~> 0.12"])
+  spec.add_runtime_dependency("octokit", ["~> 4.0"])
   spec.add_runtime_dependency("colorize", ["~> 0.7"])
 
   # Development only