diff --git a/app/middleware/meta.js b/app/middleware/meta.js
index 519bcebe2e..680d115ffc 100644
--- a/app/middleware/meta.js
+++ b/app/middleware/meta.js
@@ -7,8 +7,8 @@
 const semver = require('semver');
 
 module.exports = options => {
-  // Node.js >=14.8.0 will set Keep-Alive Header, see https://github.com/nodejs/node/pull/34561
-  const shouldPatchKeepAliveHeader = semver.lt(process.version, '14.8.0');
+  // Node.js >=14.8.0 and >= 12.19.0 will set Keep-Alive Header, see https://github.com/nodejs/node/pull/34561
+  const shouldPatchKeepAliveHeader = !semver.satisfies(process.version, '>=14.8.0 || ^12.19.0');
 
   return async function meta(ctx, next) {
     if (options.logging) {
diff --git a/lib/egg.js b/lib/egg.js
index 3fb2078f76..b2410e0d51 100644
--- a/lib/egg.js
+++ b/lib/egg.js
@@ -411,7 +411,7 @@ class EggApplication extends EggCore {
       const rundir = this.config.rundir;
       const dumpFile = path.join(rundir, `${this.type}_timing_${process.pid}.json`);
       fs.writeFileSync(dumpFile, CircularJSON.stringify(json, null, 2));
-      this.timing.clear();
+      // only disable, not clear bootstrap timing data.
       this.timing.disable();
     } catch (err) {
       this.coreLogger.warn(`dumpTiming error: ${err.message}`);
diff --git a/test/lib/egg.test.js b/test/lib/egg.test.js
index a4e582c85f..433e47c337 100644
--- a/test/lib/egg.test.js
+++ b/test/lib/egg.test.js
@@ -146,13 +146,13 @@ describe('test/lib/egg.test.js', () => {
       assert(json[0].pid === process.pid);
     });
 
-    it('should disable & clear timing after ready', function* () {
+    it('should disable timing after ready', function* () {
       const json = app.timing.toJSON();
-      assert(json.length === 0);
+      const last = json[json.length - 1];
       app.timing.start('a');
       app.timing.end('a');
       const json2 = app.timing.toJSON();
-      assert(json2.length === 0);
+      assert(json2[json.length - 1].name === last.name);
     });
 
     it('should ignore error when dumpTiming', done => {