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diff --git a/rubygem-pdf-core.spec b/rubygem-pdf-core.spec
index eaac1c8..3151322 100644
--- a/rubygem-pdf-core.spec
+++ b/rubygem-pdf-core.spec
@@ -1,15 +1,18 @@
 %global gem_name pdf-core
 Name:                rubygem-%{gem_name}
-Version:             0.8.1
+Version:             0.9.0
 Release:             1
 Summary:             PDF::Core is used by Prawn to render PDF documents
 License:             Ruby
 URL:                 https://github.com/prawnpdf/pdf-core
-Source0:             https://rubygems.org/gems/pdf-core-%{version}.gem
+Source0:             https://rubygems.org/gems/%{gem_name}-%{version}.gem
+# git clone https://github.com/prawnpdf/pdf-core && cd pdf-core
+# git checkout 0.9.0 && tar czvf pdf-core-0.9.0-specs.tgz spec
 Source1:             %{gem_name}-%{version}-specs.tgz
 BuildRequires:       ruby(release) rubygems-devel >= 1.3.6 ruby >= 1.9.3 rubygem(pdf-reader) => 1.2
 BuildRequires:       rubygem(pdf-inspector) => 1.1.0 rubygem(rspec)
 BuildArch:           noarch
+
 %description
 PDF::Core is used by Prawn to render PDF documents.
 
@@ -57,5 +60,8 @@ popd
 %{gem_instdir}/%{gem_name}.gemspec
 
 %changelog
+* Tue Jan 17 2023 caodongxia <caodongxia@h-partners.com> - 0.9.0-1
+- update to 0.9.0
+
 * Wed Aug 5 2020 wangchong <wangchong56@huawei.com> - 0.8.1-1
 - package init