diff --git a/README.md b/README.md
index 5365c01..a03cf9e 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ Start up a MongoDB database:
 
 Start up the app:
 
-- run command, `docker run -ti --rm -d -p 5000:5000 -e MONGO_DBNAME=flask-mongodb-web-app-example -e MONGO_URI="mongodb://admin:secret@host.docker.internal:27017/example?authSource=admin&retryWrites=true&w=majority" bloombar/flask-mongodb-web-app-example`
+- run command, `docker run -ti --rm -d -p 5000:5000 -e MONGO_DBNAME=flask-mongodb-web-app-example -e MONGO_URI="mongodb://admin:secret@host.docker.internal:27017" bloombar/flask-mongodb-web-app-example`
 - if you see an error about the port number being already in use, change the first `5000` in the command to a different port number, e.g. `-p 10000:5000` to use your computer's port `10000`.
 
 View the app in your browser:
diff --git a/env.example b/env.example
index 8018d6b..550fb9c 100644
--- a/env.example
+++ b/env.example
@@ -1,5 +1,5 @@
 MONGO_DBNAME=your_db_name
-MONGO_URI="mongodb://your_db_username:your_db_password@your_db_host_server_name:27017/your_db_name?authSource=admin&retryWrites=true&w=majority"
+MONGO_URI="mongodb://your_db_username:your_db_password@your_db_host_server_name:27017"
 FLASK_APP=app.py
 FLASK_ENV=development
 FLASK_PORT=5000