diff --git a/python-flask.spec b/python-flask.spec
index ec0e6e3e21f7de7b447b20132b5fbda55fd04fe6..9ea504135f3a76273513c064bfc2078c3ed90808 100644
--- a/python-flask.spec
+++ b/python-flask.spec
@@ -1,6 +1,6 @@
 Name:            python-flask
 Version:         1.1.2
-Release:         3
+Release:         4
 Epoch:           1
 Summary:         A lightweight WSGI web application framework
 License:         BSD
@@ -30,7 +30,7 @@ Python-flask for python 2 version
 %package -n python3-flask
 Summary:         python-flask for python 3 version
 %{?python_provide:%python_provide python3-flask}
-Requires:        python3-jinja2 python3-werkzeug python3-itsdangerous python3-click python3-simplejson
+Requires:        python3-jinja2 python3-werkzeug python3-itsdangerous python3-click
 
 %description -n python3-flask
 Python-flask for python 3 version
@@ -77,6 +77,9 @@ PYTHONPATH=%{buildroot}%{python3_sitelib} py.test-%{python3_version} -v || :
 %{python3_sitelib}/*
 
 %changelog
+* Mon Oct 11 2021 Jiachen Fan<fanjiachen3@huawei.com> - 1.1.2-4
+- backport add require pythonx-simplejson. details see issue #I4CGIS
+
 * Sat Oct 9 2021 Jiachen Fan<fanjiachen3@huawei.com> - 1.1.2-3
 - in openEuler LTS version, python-simple not provide python2-simplejson. then remove it