diff --git a/src/event/ngx_event_openssl.c b/src/event/ngx_event_openssl.c
index 7512913..2c384a4 100644
--- a/src/event/ngx_event_openssl.c
+++ b/src/event/ngx_event_openssl.c
@@ -345,6 +345,11 @@
     }
 #endif
 
+#ifdef SSL_CTX_set_min_proto_version
+    SSL_CTX_set_min_proto_version(ssl->ctx, 0);
+    SSL_CTX_set_max_proto_version(ssl->ctx, TLS1_2_VERSION);
+#endif
+
 #ifdef TLS1_3_VERSION
     SSL_CTX_set_min_proto_version(ssl->ctx, 0);
     SSL_CTX_set_max_proto_version(ssl->ctx, TLS1_3_VERSION);