diff --git a/Gemfile b/Gemfile
index 0724b52..093f773 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,6 +3,10 @@ source "https://rubygems.org"
 gemspec
 
 group :test do
+  gem "rake"
+  gem "bundler"
+  gem "rubocop"
+  gem "overcommit"
   gem "coveralls", "~>0.8", require: false
   gem "simplecov", "~>0.10", require: false
   gem "codeclimate-test-reporter", "~>0.4"
diff --git a/Gemfile.lock b/Gemfile.lock
index f3502b0..e2fa964 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    github_changelog_generator (1.11.2)
+    github_changelog_generator (1.11.3)
       bundler (>= 1.7)
       colorize (~> 0.7)
       github_api (~> 0.12)
@@ -98,9 +98,13 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  bundler
   codeclimate-test-reporter (~> 0.4)
   coveralls (~> 0.8)
   github_changelog_generator!
+  overcommit
+  rake
+  rubocop
   simplecov (~> 0.10)
 
 BUNDLED WITH
diff --git a/Rakefile b/Rakefile
index 6e525a6..90a7c1c 100644
--- a/Rakefile
+++ b/Rakefile
@@ -9,15 +9,31 @@ require "overcommit"
 RuboCop::RakeTask.new
 RSpec::Core::RakeTask.new(:rspec)
 
-task :create_man do |_t|
-  os_prefix = "/usr/local"
-  man_prefix = Pathname("#{os_prefix}/share/man/man1")
-  man_pages = "man/git-*"
+task :copy_man_page_to_manpath do |_t|
+  known_manpath_paths = %w(/etc/manpath.config /etc/manpaths)
+  manpath = known_manpath_paths.find do |f|
+    path = Pathname(f)
+    path.file? && path.readable?
+  end
+
+  return unless manpath
+
+  writable_man_path = Pathname(manpath).each_line.find do |line|
+    path = Pathname(line.chomp)
+    path.directory? && path.writable?
+  end
+
+  return unless writable_man_path
+
+  man_prefix = Pathname("#{writable_man_path.chomp}/man1")
+  man_pages = "man/git-*.1"
 
   Pathname.glob(man_pages) do |path|
-    FileUtils.cp(path, man_prefix + path.basename)
+    if path.exist? && man_prefix.exist? && man_prefix.writable?
+      FileUtils.cp(path, man_prefix + path.basename)
+    end
   end
 end
 
 task checks: [:rubocop, :rspec]
-task default: [:create_man]
+task default: [:copy_man_page_to_manpath]
diff --git a/github_changelog_generator.gemspec b/github_changelog_generator.gemspec
index a7922b4..a8ad97a 100644
--- a/github_changelog_generator.gemspec
+++ b/github_changelog_generator.gemspec
@@ -17,7 +17,7 @@ Gem::Specification.new do |spec|
   spec.description = "Changelog generation has never been so easy. Fully automate changelog generation - this gem generate change log file based on tags, issues and merged pull requests from Github issue tracker."
   spec.homepage = "https://github.com/skywinder/Github-Changelog-Generator"
   spec.license = "MIT"
-  #spec.extensions = ["Rakefile"]
+  spec.extensions = ["Rakefile"]
 
   spec.files = `git ls-files -z`.split("\x0")
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }