diff --git a/python-lxml.spec b/python-lxml.spec
index 5d2550c5bb564a7d7e30a5a0f140d042e93c0ff9..fe49da7006f4da0819cacc1604dd14354dc04c0d 100644
--- a/python-lxml.spec
+++ b/python-lxml.spec
@@ -7,7 +7,7 @@ The latest release works with all CPython versions from 2.7 to 3.7.
 
 Name:           python-%{modname}
 Version:        4.5.2
-Release:        7
+Release:        8 
 Summary:        XML processing library combining libxml2/libxslt with the ElementTree API
 License:        BSD
 URL:            http://lxml.de
@@ -44,6 +44,8 @@ BuildRequires:  python3-devel python3-setuptools python3-Cython
 
 %prep
 %autosetup -n %{modname}-%{version} -p1
+# Remove pregenerated Cython C sources
+find -type f -name '*.c' -print -delete
 
 %build
 export WITH_CYTHON=true
@@ -71,6 +73,9 @@ make test3
 %doc README.rst src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/readme.txt
 
 %changelog
+* Mon Jul 25 2022 shixuantong <shixuantong@h-partners.com> - 4.5.2-8
+- Remove pregenerated Cython C sources
+
 * Thu Jul 21 2022 renhongxun <renhongxun@h-partners.com> - 4.5.2-7
 - fix CVE-2022-2309