diff --git a/pycparser-2.10-ply.patch b/pycparser-2.10-ply.patch
deleted file mode 100644
index 11bbc176b4dc9850eed595254b12bf459fe86a90..0000000000000000000000000000000000000000
--- a/pycparser-2.10-ply.patch
+++ /dev/null
@@ -1,39 +0,0 @@
-diff -up pycparser-release_v2.10/pycparser/c_lexer.py.ply pycparser-release_v2.10/pycparser/c_lexer.py
---- pycparser-release_v2.10/pycparser/c_lexer.py.ply	2013-08-03 07:15:32.000000000 -0600
-+++ pycparser-release_v2.10/pycparser/c_lexer.py	2014-08-20 12:40:48.308461164 -0600
-@@ -9,8 +9,8 @@
- import re
- import sys
- 
--from .ply import lex
--from .ply.lex import TOKEN
-+from ply import lex
-+from ply.lex import TOKEN
- 
- 
- class CLexer(object):
-diff -up pycparser-release_v2.10/pycparser/c_parser.py.ply pycparser-release_v2.10/pycparser/c_parser.py
---- pycparser-release_v2.10/pycparser/c_parser.py.ply	2013-08-03 07:15:32.000000000 -0600
-+++ pycparser-release_v2.10/pycparser/c_parser.py	2014-08-20 12:40:05.154894980 -0600
-@@ -8,7 +8,7 @@
- #------------------------------------------------------------------------------
- import re
- 
--from .ply import yacc
-+from ply import yacc
- 
- from . import c_ast
- from .c_lexer import CLexer
-diff -up pycparser-release_v2.10/setup.py.ply pycparser-release_v2.10/setup.py
---- pycparser-release_v2.10/setup.py.ply	2013-08-03 07:15:32.000000000 -0600
-+++ pycparser-release_v2.10/setup.py	2014-08-20 12:40:05.154894980 -0600
-@@ -60,7 +60,7 @@ setup(
-         'Programming Language :: Python :: 3.6',
-     ],
-     python_requires=">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*",
--    packages=['pycparser', 'pycparser.ply'],
-+    packages=['pycparser'],
-     package_data={'pycparser': ['*.cfg']},
-     cmdclass={'install': install, 'sdist': sdist},
- )
---
diff --git a/python-pycparser.spec b/python-pycparser.spec
index 4e7027caf0143bb937212bd380557c42f3f8e031..0cb6cfa154583139add5c5bfdbd4f77e2538896f 100644
--- a/python-pycparser.spec
+++ b/python-pycparser.spec
@@ -1,15 +1,12 @@
 Name:           python-pycparser
 Summary:        A parser for the C language
-Version:        2.20
-Release:        3
+Version:        2.21
+Release:        1
 License:        BSD
 URL:            http://github.com/eliben/pycparser
 Source0:        http://github.com/eliben/pycparser/archive/release_v%{version}.tar.gz
 # source1 from https://koji.fedoraproject.org/koji/buildinfo?buildID=1092324
 Source1:        pycparser-0.91.1-remove-relative-sys-path.py
-# patch1 is adapted from https://koji.fedoraproject.org/koji/buildinfo?buildID=1092324
-# remove embedded libraries during packaging
-Patch1:       pycparser-2.10-ply.patch
 
 BuildArch:      noarch
 
@@ -42,8 +39,6 @@ that need to parse C source code.
 This package is for Python3.
 %prep
 %autosetup -n pycparser-release_v%{version} -p1
-# remove embedded copy of ply
-rm -rf pycparser/ply
 %{__python3} %{SOURCE1} examples
 dos2unix LICENSE
 
@@ -57,7 +52,7 @@ popd
 %py3_install
 
 %check
-%{__python3} tests/all_tests.py
+%{__python3} tests/*.py
 
 %files devel
 %defattr(-,root,root)
@@ -70,6 +65,9 @@ popd
 %{python3_sitelib}/pycparser-*.egg-info
 
 %changelog
+* Fri Dec 10 2021 jiangxinyu <jiangxinyu@kylinos.cn> - 2.21-1
+- upgrade to 2.21
+
 * Fri Oct 30 2020 tianwei<tianwei12@huawei.com> - 2.20-3
 - remove python2
 
diff --git a/release_v2.20.tar.gz b/release_v2.20.tar.gz
deleted file mode 100644
index 6d9d4bc33e926b08183ccb7723e25c881851e9fb..0000000000000000000000000000000000000000
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diff --git a/release_v2.21.tar.gz b/release_v2.21.tar.gz
new file mode 100644
index 0000000000000000000000000000000000000000..0fa74debe7fa57d43a05c2d58e1968961ab8b3ee
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