diff --git a/dulwich-0.20.11.tar.gz b/dulwich-0.20.11.tar.gz
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diff --git a/dulwich-0.20.20.tar.gz b/dulwich-0.20.20.tar.gz
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diff --git a/python-dulwich.spec b/python-dulwich.spec
index cfcfd23f06988854ad1777cb1e416394f12691c8..fd900f8aead260e5c22a5ae5f06ffef7e082a14b 100755
--- a/python-dulwich.spec
+++ b/python-dulwich.spec
@@ -1,31 +1,14 @@
 %global _empty_manifest_terminate_build 0
 Name:		python-dulwich
-Version:	0.20.11
+Version:	0.20.20
 Release:	1
 Summary:	Python Git Library
-License:	Apachev2 or later or GPLv2
+License:	Apachev2 or GPLv2+ or GPLv2
 URL:		https://www.dulwich.io/
-Source0:	https://files.pythonhosted.org/packages/fc/86/4bf0caafc7700904844ad3f25f212d5d8aea5889c67dbdaa66dd213b7203/dulwich-0.20.11.tar.gz
-
-Requires:	python3-urllib3
-Requires:	python3-certifi
-Requires:	python3-fastimport
-Requires:	python3-urllib3[secure]
-Requires:	python3-gpg
-Requires:	python3-pyinotify
-
+Source0:	https://files.pythonhosted.org/packages/74/a8/6e7cba1c5a37169e7f79343b6ab4a1f58ba4b9ddcc1322e561f9b193f759/dulwich-0.20.20.tar.gz
 %description
-By default, Dulwich' setup.py will attempt to build and install the optional C
-extensions. The reason for this is that they significantly improve the performance
-since some low-level operations that are executed often are much slower in CPython.
-If you don't want to install the C bindings, specify the --pure argument to setup.py::
-    $ python setup.py --pure install
-or if you are installing from pip::
-    $ pip install dulwich --global-option="--pure"
-Note that you can also specify --global-option in a
-`requirements.txt <https://pip.pypa.io/en/stable/reference/pip_install/#requirement-specifiers>`_
-file, e.g. like this::
-    dulwich --global-option=--pure
+Python Git Library.
+
 
 %package -n python3-dulwich
 Summary:	Python Git Library
@@ -36,36 +19,18 @@ BuildRequires:	python3-cffi
 BuildRequires:	gcc
 BuildRequires:	gdb
 %description -n python3-dulwich
-By default, Dulwich' setup.py will attempt to build and install the optional C
-extensions. The reason for this is that they significantly improve the performance
-since some low-level operations that are executed often are much slower in CPython.
-If you don't want to install the C bindings, specify the --pure argument to setup.py::
-    $ python setup.py --pure install
-or if you are installing from pip::
-    $ pip install dulwich --global-option="--pure"
-Note that you can also specify --global-option in a
-`requirements.txt <https://pip.pypa.io/en/stable/reference/pip_install/#requirement-specifiers>`_
-file, e.g. like this::
-    dulwich --global-option=--pure
+Python Git Library.
+
 
 %package help
 Summary:	Development documents and examples for dulwich
 Provides:	python3-dulwich-doc
 %description help
-By default, Dulwich' setup.py will attempt to build and install the optional C
-extensions. The reason for this is that they significantly improve the performance
-since some low-level operations that are executed often are much slower in CPython.
-If you don't want to install the C bindings, specify the --pure argument to setup.py::
-    $ python setup.py --pure install
-or if you are installing from pip::
-    $ pip install dulwich --global-option="--pure"
-Note that you can also specify --global-option in a
-`requirements.txt <https://pip.pypa.io/en/stable/reference/pip_install/#requirement-specifiers>`_
-file, e.g. like this::
-    dulwich --global-option=--pure
+Python Git Library.
+
 
 %prep
-%autosetup -n dulwich-0.20.11
+%autosetup -n dulwich-0.20.20
 
 %build
 %py3_build
@@ -105,5 +70,8 @@ mv %{buildroot}/doclist.lst .
 %{_docdir}/*
 
 %changelog
+* Fri Jul 09 2021 openstack-sig <openstack@openeuler.org>
+- Update to 0.20.20
+
 * Fri Nov 20 2020 Python_Bot <Python_Bot@openeuler.org>
 - Package Spec generated