--- Modules/_ssl.c
+++ Modules/_ssl.c
@@ -210,6 +210,7 @@
 		errstr = "SSL_CTX_new error";
 		goto fail;
 	}
+	SSL_CTX_set_options(self->ctx, SSL_OP_ALL); /* ssl compatibility */
 
 	if (key_file) {
 		Py_BEGIN_ALLOW_THREADS