diff --git a/package.json b/package.json
index 96fcd71d..4a9d74b7 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
     "egg-utils": "^1.0.0",
     "glob": "^7.1.1",
     "intelli-espower-loader": "^1.0.1",
-    "istanbul": "^0.4.5",
+    "istanbul": "^1.1.0-alpha.1",
     "mkdirp": "^0.5.1",
     "mocha": "^3.2.0",
     "power-assert": "^1.4.2",
diff --git a/test/egg-cov.test.js b/test/egg-cov.test.js
index 4dc1cc3c..c66af9bf 100644
--- a/test/egg-cov.test.js
+++ b/test/egg-cov.test.js
@@ -48,7 +48,7 @@ describe('egg-bin cov', () => {
     .expect('stdout', /✓ should success/)
     .expect('stdout', /a\.test\.js/)
     .expect('stdout', /b\/b\.test\.js/)
-    .expect('stdout', /Statements {3}: 100% \( 0\/0 \)/)
+    .expect('stdout', /Statements {3}: Unknown% \( 0\/0 \)/)
     .expect('code', 0)
     .end((err, res) => {
       assert(!err);