diff --git a/Lib/test/test_ssl.py b/Lib/test/test_ssl.py
--- a/Lib/test/test_ssl.py
+++ b/Lib/test/test_ssl.py
@@ -632,6 +632,14 @@
 
 
 class NetworkedTests(unittest.TestCase):
+    def setUp(self):
+        self._orig_env = os.environ
+        os.environ = os.environ.copy()
+        os.putenv('OPENSSL_X509_TEA_DISABLE', '1')
+
+    def tearDown(self):
+        os.putenv('OPENSSL_X509_TEA_DISABLE', '')
+        os.environ = self._orig_env
 
     def test_connect(self):
         with support.transient_internet("svn.python.org"):