diff --git a/python-dns.spec b/python-dns.spec
index 38e487d905d73dee9e430d60469bca7064bda074..645a18da02e7e8874841cb782fc3910668979175 100644
--- a/python-dns.spec
+++ b/python-dns.spec
@@ -14,33 +14,24 @@ messages, names, and records.
 Name:           python-dns
 Summary:        %{sum}
 Version:        1.15.0
-Release:        10
+Release:        11
 License:        MIT
 URL:            http://www.dnspython.org/
 Source0: http://www.dnspython.org/kits/%{version}/dnspython-%{version}.tar.gz
 
 Patch0:         test_fails_on_missing_file.patch
 
-BuildRequires:  python2-devel python2-setuptools python2-crypto
-BuildRequires:  python3-devel python3-setuptools python3-crypto
+BuildRequires:  python3-devel python3-setuptools python3-ecdsa python3-pycryptodomex
 
 BuildArch:      noarch
 
 %description
 %{_description}
 
-%package -n python2-dns
-Summary:        %{sum}
-%{?python_provide:%python_provide python2-dns}
-Requires:       python2-crypto
-
-%description -n python2-dns
-%{_description}
-
 %package     -n python3-dns
 Summary:        %{sum}
 %{?python_provide:%python_provide python3-dns}
-Requires:       python3-crypto
+Requires:       python3-ecdsa python3-pycryptodomex
 
 %description -n python3-dns
 %{_description}
@@ -52,22 +43,14 @@ Requires:       python3-crypto
 find examples -type f | xargs chmod a-x
 
 %build
-%py2_build
 %py3_build
 
 %install
-%py2_install
 %py3_install
 
 %check
-%{__python2} setup.py test
 %{__python3} setup.py test
 
-%files -n python2-dns
-%doc LICENSE
-%{python2_sitelib}/*egg-info
-%{python2_sitelib}/dns
-
 %files -n python3-dns
 %doc LICENSE
 %{python3_sitelib}/*egg-info
@@ -77,5 +60,8 @@ find examples -type f | xargs chmod a-x
 %doc ChangeLog examples
 
 %changelog
+* Fri Aug 7 2020 zengwefeng <zwfeng@huawei.com> - 1.15.0-11
+- use python-ecdsa python-pycryptodomex instead of python-crypto
+
 * Fri Dec 6 2019 caomeng<caomeng5@huawei.com> - 1.15.0-10
-- Package init
\ No newline at end of file
+- Package init