diff --git a/lib/mock_agent.js b/lib/mock_agent.js
index 304f849..8e61655 100644
--- a/lib/mock_agent.js
+++ b/lib/mock_agent.js
@@ -1,5 +1,23 @@
 const { debuglog } = require('util');
-const { MockAgent, setGlobalDispatcher, getGlobalDispatcher } = require('urllib');
+let { MockAgent, setGlobalDispatcher, getGlobalDispatcher } = require('urllib');
+if (typeof getGlobalDispatcher === 'undefined') {
+  let urllibNext;
+  // https://github.com/eggjs/egg/blob/3.x/package.json#L59
+  try {
+    // try to use urllib4
+    urllibNext = require('urllib4');
+  } catch {
+    // try to use urllib-next
+    try {
+      urllibNext = require('urllib-next');
+    } catch {
+      throw new Error('Please install urllib@4');
+    }
+  }
+  MockAgent = urllibNext.MockAgent;
+  setGlobalDispatcher = urllibNext.setGlobalDispatcher;
+  getGlobalDispatcher = urllibNext.getGlobalDispatcher;
+}
 
 const debug = debuglog('egg-mock:lib:mock_agent');
 
diff --git a/test/fixtures/apps/no-framework/plugin/a/package.json b/test/fixtures/apps/no-framework/plugin/a/package.json
index 7e3daa8..565d744 100644
--- a/test/fixtures/apps/no-framework/plugin/a/package.json
+++ b/test/fixtures/apps/no-framework/plugin/a/package.json
@@ -1,6 +1,8 @@
 {
   "eggPlugin": {
     "name": "a",
-    "dependencies": [ "egg-mock" ]
+    "dependencies": [
+      "egg-mock"
+    ]
   }
 }
diff --git a/test/fixtures/server/package.json b/test/fixtures/server/package.json
index 69a979e..f9096fc 100644
--- a/test/fixtures/server/package.json
+++ b/test/fixtures/server/package.json
@@ -1,4 +1,4 @@
 {
   "name": "server",
   "version": "1.0.0"
-}
\ No newline at end of file
+}