diff --git a/README.md b/README.md
index 39bd61b..15fc966 100644
--- a/README.md
+++ b/README.md
@@ -150,6 +150,8 @@ Run English Pal first, then run the test using pytest as follows: pytest --html=
 
 The above command will generate a HTML report file pytest_report.html after finishing executing test_add_word.py.  Note: you need to install pytest-html package first: pip install pytest-html.
 
+You may also want to use [webdriver-manager](https://pypi.org/project/webdriver-manager/) from PyPI, so that you can avoid tediously installing a web driver executable manually.  However, my experience shows that webdriver-manager is too slow.  For example, it took me 16 minutes to run 9 tests, while with the pre-installed web driver executable, it took less than 2 minutes.
+
 ## TODO
 
 
diff --git a/app/test/conftest.py b/app/test/conftest.py
index 734ca87..ed4186c 100644
--- a/app/test/conftest.py
+++ b/app/test/conftest.py
@@ -2,6 +2,7 @@ import pytest
 import sqlite3
 import time
 from selenium import webdriver
+
 from pathlib import Path
 
 @pytest.fixture
@@ -11,7 +12,7 @@ def URL():
 
 @pytest.fixture
 def driver():
-    return webdriver.Edge()  # uncomment this line if you wish to run the test on your laptop
+    return webdriver.Edge()  # follow the "End-to-end testing" section in README.md to install the web driver executable
 
 
 @pytest.fixture