diff --git a/.gitignore b/.gitignore
index 5fd4491..4b07171 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,5 @@
 /uglifier-2.4.0.gem
 /uglifier-3.0.0.gem
 /uglifier-3.0.2.gem
+/uglifier-3.1.11-tests.tgz
+/uglifier-3.1.11.gem
diff --git a/rubygem-uglifier.spec b/rubygem-uglifier.spec
index 123a6a6..1af35f8 100644
--- a/rubygem-uglifier.spec
+++ b/rubygem-uglifier.spec
@@ -2,8 +2,8 @@
 %global gem_name uglifier
 
 Name: rubygem-%{gem_name}
-Version: 3.0.2
-Release: 3%{?dist}
+Version: 3.1.11
+Release: 1%{?dist}
 Summary: Ruby wrapper for UglifyJS JavaScript compressor
 Group: Development/Languages
 # lib/source-map.js is BSD.
@@ -11,6 +11,10 @@ Group: Development/Languages
 License: MIT and BSD
 URL: http://github.com/lautis/uglifier
 Source0: https://rubygems.org/gems/%{gem_name}-%{version}.gem
+# The uglifier gem doesn't ship with the test suite.
+# git clone https://github.com/lautis/uglifier.git && cd uglifier
+# git checkout v3.1.11 && tar czvf uglifier-3.1.11-tests.tgz spec/
+Source1: %{gem_name}-%{version}-tests.tgz
 # Unbundling es5.js and split.js files,
 # since they are needed only by JScript engine, which is not supported on Fedora
 # https://github.com/lautis/uglifier/issues/99
@@ -22,13 +26,13 @@ BuildRequires: ruby
 BuildRequires: rubygem(execjs) >= 0.3.0
 BuildRequires: rubygem(rspec)
 BuildRequires: %{_bindir}/node
-BuildRequires: uglify-js = 2.7.0
+BuildRequires: uglify-js = 2.8.17
 # uglify-js does not provide single file uglify-js.js yet => let's
 # generate and bundle it here.
-Provides: bundled(uglify-js) = 2.7.0
+Provides: bundled(uglify-js) = 2.8.17
 # There is not included dist/source-map.js yet.
 # https://bugzilla.redhat.com/show_bug.cgi?id=1358915
-Provides: bundled(nodejs-source-map) = 0.5.3
+Provides: bundled(nodejs-source-map) = 0.5.6
 BuildArch: noarch
 
 %description
@@ -78,6 +82,7 @@ cp -a .%{gem_dir}/* \
 
 %check
 pushd .%{gem_instdir}
+tar xzf %{SOURCE1}
 # Disable rubygem-sourcemap because it is not part of fedora yet.
 sed -i "/require 'sourcemap'/ s/^/#/"  spec/spec_helper.rb
 sed -i '/SourceMap::Map/ i \    pending' spec/source_map_spec.rb
@@ -101,11 +106,12 @@ popd
 %{gem_instdir}/Gemfile
 %{gem_instdir}/Rakefile
 %doc %{gem_instdir}/README.md
-%{gem_instdir}/gemfiles
-%{gem_instdir}/spec
 %{gem_instdir}/%{gem_name}.gemspec
 
 %changelog
+* Wed Mar 29 2017 Jun Aruga <jaruga@redhat.com> - 3.1.11-1
+- Update to Uglifier 3.1.11.
+
 * Sat Feb 11 2017 Fedora Release Engineering <releng@fedoraproject.org> - 3.0.2-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild
 
diff --git a/sources b/sources
index daa1797..9e8b5ea 100644
--- a/sources
+++ b/sources
@@ -1 +1,2 @@
-de2dafb9245236e12630e7ba18970d79  uglifier-3.0.2.gem
+SHA512 (uglifier-3.1.11-tests.tgz) = 6b26219b1b6eac537533ad3dff8dd1f94fe67eab8695bd2d1eb4e0b019f709f585dd92a967e8acdffe0500d45ee68b1b0d6492cf6b33b926a98547e29e7827c7
+SHA512 (uglifier-3.1.11.gem) = 8746e2257e9f17b985349303ba4fa06b6112b84f52a3b848fd4cd06252de80d639d81293f8d8780018a3b20e968d6775912480b7b6161cc1e148e9ff5a632d80