diff --git a/.gitignore b/.gitignore
index a1955f5..ffc2fd7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,4 @@
 /excon-0.39.6.gem
 /excon-0.45.1.gem
 /excon-0.45.4.gem
+/excon-0.52.0.gem
diff --git a/rubygem-excon.spec b/rubygem-excon.spec
index 7d29bec..08aa7fe 100644
--- a/rubygem-excon.spec
+++ b/rubygem-excon.spec
@@ -1,8 +1,8 @@
 %global gem_name excon
 
 Name: rubygem-%{gem_name}
-Version: 0.45.4
-Release: 2%{?dist}
+Version: 0.52.0
+Release: 1%{?dist}
 Summary: Speed, persistence, http(s)
 Group: Development/Languages
 License: MIT
@@ -11,13 +11,14 @@ Source0: https://rubygems.org/gems/%{gem_name}-%{version}.gem
 BuildRequires: ruby(release)
 BuildRequires: rubygems-devel
 BuildRequires: ruby
+BuildRequires: %{_bindir}/rackup
+BuildRequires: %{_bindir}/shindo
 BuildRequires: rubygem(activesupport)
 BuildRequires: rubygem(delorean)
 BuildRequires: rubygem(eventmachine)
 BuildRequires: rubygem(open4)
-BuildRequires: %{_bindir}/rackup
-BuildRequires: rubygem(shindo)
 BuildRequires: rubygem(sinatra)
+BuildRequires: rubygem(rspec)
 BuildArch: noarch
 
 %description
@@ -48,35 +49,45 @@ rm -rf %{buildroot}%{gem_instdir}/data
 
 %check
 pushd .%{gem_instdir}
+# Unicorn is not available in Fedora yet (rhbz#1065685).
+# Puma is not available in Fedora yet (rhbz#1372718).
+sed -i '/if plugin == :unicorn/ i\    before { skip("until #{plugin} is in Fedora") } if [:unicorn, :puma].include? plugin' spec/excon_test_server_spec.rb
+sed -i '/with_unicorn/ s/^/  pending\n\n/' tests/{basic_tests.rb,proxy_tests.rb}
+
+rspec spec
+
 # Don't use Bundler.
 sed -i "/'bundler\/setup'/ s/^/#/" tests/test_helper.rb
 
-# Unicorn is not available in Fedora yet (rhbz#1065685).
-sed -i '/with_unicorn/ s/^/  pending\n\n/' tests/{basic_tests.rb,proxy_tests.rb}
+# This would require Sinatra 2.x+ or sinatra-contrib.
+mv tests/middlewares/capture_cookies_tests.rb{,.disabled}
 
 shindo
 popd
 
 %files
 %dir %{gem_instdir}
-%doc %{gem_instdir}/LICENSE.md
+%license %{gem_instdir}/LICENSE.md
 %{gem_libdir}
 %exclude %{gem_cache}
-%exclude %{gem_instdir}/Gemfile*
 %{gem_spec}
 
 %files doc
+%doc %{gem_docdir}
 %doc %{gem_instdir}/CONTRIBUT*
+%{gem_instdir}/Gemfile*
 %doc %{gem_instdir}/README.md
 %{gem_instdir}/benchmarks
-%{gem_instdir}/tests
-%{gem_instdir}/excon.gemspec
 %{gem_instdir}/Rakefile
-%doc %{gem_docdir}
 %doc %{gem_instdir}/changelog.txt
-
+%{gem_instdir}/excon.gemspec
+%{gem_instdir}/spec
+%{gem_instdir}/tests
 
 %changelog
+* Thu Sep 08 2016 Vít Ondruch <vondruch@redhat.com> - 0.52.0-1
+- Update to excon 0.52.0.
+
 * Thu Feb 04 2016 Fedora Release Engineering <releng@fedoraproject.org> - 0.45.4-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_24_Mass_Rebuild
 
diff --git a/sources b/sources
index 7864229..0b750f8 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-35d822c7ab90c88a17f79ce8c0b63575  excon-0.45.4.gem
+0f6da8f079210019d57234d683a259f5  excon-0.52.0.gem