diff --git a/.gitignore b/.gitignore
index a17bce1..efea60f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,3 +17,4 @@
 /kramdown-1.13.1.gem
 /kramdown-1.13.2.gem
 /kramdown-1.14.0.gem
+/kramdown-1.15.0.gem
diff --git a/rubygem-kramdown.spec b/rubygem-kramdown.spec
index 61c6f93..9c3b8b5 100644
--- a/rubygem-kramdown.spec
+++ b/rubygem-kramdown.spec
@@ -2,8 +2,8 @@
 %global gem_name kramdown
 
 Name: rubygem-%{gem_name}
-Version: 1.14.0
-Release: 2%{?dist}
+Version: 1.15.0
+Release: 1%{?dist}
 Summary: Fast, pure-Ruby Markdown-superset converter
 
 License:	MIT
@@ -12,6 +12,10 @@ Source0:	https://rubygems.org/gems/%{gem_name}-%{version}.gem
 BuildRequires:	ruby(release)
 BuildRequires:	rubygems-devel
 BuildRequires:	rubygem(minitest) >= 5
+BuildRequires:	rubygem(prawn)
+BuildRequires:	rubygem(prawn-table)
+BuildRequires:	rubygem(rake)
+BuildRequires:	rubygem(rouge)
 Requires:	ruby(release)
 Requires:	ruby(rubygems)
 BuildArch: noarch
@@ -67,15 +71,8 @@ LANG=en_US.utf8
 
 pushd .%{gem_instdir}
 
-%if 0%{?fedora} >= 21
-sed -i.minitest \
-	-e "\@require 'kramdown'@i gem 'minitest', '~> 4'" \
-	test/run_tests.rb
-%endif
-
 # Some tests seem to be failing, need investigating
-ruby -Ilib:test:. --verbose test/run_tests.rb 2>&1 | tee test-result.log
-cat test-result.log | grep FAILED && echo "Please investigate this" || true
+rake test || true
 popd
 
 %files
@@ -97,6 +94,9 @@ popd
 %doc	%{gem_instdir}/doc/
 
 %changelog
+* Thu Sep 14 2017 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.15.0-1
+- 1.15.0
+
 * Thu Jul 27 2017 Fedora Release Engineering <releng@fedoraproject.org> - 1.14.0-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Mass_Rebuild
 
diff --git a/sources b/sources
index 61ded89..f022dd1 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (kramdown-1.14.0.gem) = bd6295db2fe0d3a7dca936d47f0aaf7f939a86361dfdd3203a52683a9eb11a68075cad7d068cc56a315db3c14e73cf5aebb87531ba3086301a7521c5a86f9905
+SHA512 (kramdown-1.15.0.gem) = db91bef9df254fd55a2742a38fd9180eff80ccd720fbd6600473840772f10441b12abcf497efdc91b920f7cd10c8b3d66f0b3f2dacb3480b290c222a5c2aa0b4