diff --git a/app.js b/app.js
index 2c39c58..efffc5a 100644
--- a/app.js
+++ b/app.js
@@ -2,4 +2,15 @@
 
 module.exports = function(app) {
   app.config.coreMiddleware.push('session');
+
+  // listen on session's events
+  app.on('session:missed', ({ ctx, key }) => {
+    ctx.coreLogger.warn('[session][missed] key(%s)', key);
+  });
+  app.on('session:expired', ({ ctx, key, value }) => {
+    ctx.coreLogger.warn('[session][expired] key(%s) value(%j)', key, value);
+  });
+  app.on('session:invalid', ({ ctx, key, value }) => {
+    ctx.coreLogger.warn('[session][invalid] key(%s) value(%j)', key, value);
+  });
 };
diff --git a/package.json b/package.json
index 97a3127..3e232e4 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "cookie"
   ],
   "dependencies": {
-    "koa-session": "^5.5.0"
+    "koa-session": "^5.7.0"
   },
   "devDependencies": {
     "autod": "^2.10.1",
diff --git a/test/app/middleware/session.test.js b/test/app/middleware/session.test.js
index cbaa2a1..1ee8203 100644
--- a/test/app/middleware/session.test.js
+++ b/test/app/middleware/session.test.js
@@ -74,6 +74,23 @@ describe('test/app/middlewares/session.test.js', () => {
       });
       after(() => app.close());
 
+      if (name === 'redis-session') {
+        it('should get with ', function* () {
+          yield agent
+            .get('/set?foo=bar')
+            .expect(200)
+            .expect({ foo: 'bar' })
+            .expect('set-cookie', /EGG_SESS=.*?;/);
+
+          mm.empty(app.redis, 'get');
+
+          yield agent
+            .get('/get')
+            .expect(200)
+            .expect({});
+        });
+      }
+
       it('should get empty session and do not set cookie when session not populated', function* () {
         yield agent
           .get('/get')