diff --git a/.github/workflows/nodejs.yml b/.github/workflows/nodejs.yml
index ee03f5b7f06..a5ce291b14d 100644
--- a/.github/workflows/nodejs.yml
+++ b/.github/workflows/nodejs.yml
@@ -57,7 +57,7 @@ jobs:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
         node-version: [10.x, 12.x, 14.x]
-        webpack-version: [next, latest]
+        webpack-version: [webpack-4, latest]
 
     steps:
       - uses: actions/checkout@v2
diff --git a/test/build-errors/errors.test.js b/test/build-errors/errors.test.js
index 2ad43f87f5b..23d13c1fe35 100644
--- a/test/build-errors/errors.test.js
+++ b/test/build-errors/errors.test.js
@@ -22,7 +22,8 @@ describe('errors', () => {
 
         expect(json['hash']).toBeDefined();
         expect(json['errors']).toHaveLength(1);
-        expect(json['errors'][0].message).toMatch(/Can't resolve/);
+        // `message` for `webpack@5`
+        expect(json['errors'][0].message ? json['errors'][0].message : json['errors'][0]).toMatch(/Can't resolve/);
     });
 
     it('should store json to a file', (done) => {
@@ -43,7 +44,8 @@ describe('errors', () => {
 
                 expect(json['hash']).toBeDefined();
                 expect(json['errors']).toHaveLength(1);
-                expect(json['errors'][0].message).toMatch(/Can't resolve/);
+                // `message` for `webpack@5`
+                expect(json['errors'][0].message ? json['errors'][0].message : json['errors'][0]).toMatch(/Can't resolve/);
 
                 done();
             });
diff --git a/test/build-warnings/src/index.js b/test/build-warnings/src/index.js
index 6d694816c32..17d6eb1b468 100644
--- a/test/build-warnings/src/index.js
+++ b/test/build-warnings/src/index.js
@@ -1,9 +1,9 @@
-let module;
+let obj;
 
 try {
-  module = require('unknown');  
+  obj = require('unknown');  
 } catch (e) {
     // Ignore
 }
 
-export default module
+export default obj
diff --git a/test/build-warnings/warnings.test.js b/test/build-warnings/warnings.test.js
index a9ec06fe476..6b880996301 100644
--- a/test/build-warnings/warnings.test.js
+++ b/test/build-warnings/warnings.test.js
@@ -7,8 +7,6 @@ describe('warnings', () => {
     it('should output by default', () => {
         const { stdout, exitCode } = run(__dirname);
 
-        console.log(stdout);
-
         expect(stdout).toMatch(/WARNING in/);
         expect(stdout).toMatch(/Error: Can't resolve/);
         expect(exitCode).toBe(0);
@@ -24,7 +22,8 @@ describe('warnings', () => {
 
         expect(json['hash']).toBeDefined();
         expect(json['warnings']).toHaveLength(1);
-        expect(json['warnings'][0].message).toMatch(/Can't resolve/);
+        // `message` for `webpack@5`
+        expect(json['warnings'][0].message ? json['warnings'][0].message : json['warnings'][0]).toMatch(/Can't resolve/);
     });
 
     it('should store json to a file', (done) => {
@@ -45,7 +44,8 @@ describe('warnings', () => {
 
                 expect(json['hash']).toBeDefined();
                 expect(json['warnings']).toHaveLength(1);
-                expect(json['warnings'][0].message).toMatch(/Can't resolve/);
+                // `message` for `webpack@5`
+                expect(json['warnings'][0].message ? json['warnings'][0].message : json['warnings'][0]).toMatch(/Can't resolve/);
 
                 done();
             });