diff --git a/README.md b/README.md
index 51a7cad..fdf7388 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,7 @@ To build and use the bot, you'll need to:
 To make your own bot follow these steps:
 
 1. Clone this repository on your local machine
-2. Create a virtual environment in your project's root directory: `python3 -m venv venv && source venv/bin/activate`
+2. Create a virtual environment in your project's root directory: `python -m venv venv`
 3. Install the required libraries using pip: `pip install -r requirements.txt`
 4. Create a file called `.env` in the root directory of your project. Put your twitter App keys there:
 ```
diff --git a/requirements.txt b/requirements.txt
index fd2fbd4..6635d98 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
-tweepy==3.9.0
+tweepy==4.9.0
 python-dotenv==0.14.0
\ No newline at end of file
diff --git a/src/lambda_function.py b/src/lambda_function.py
index 652d30d..7691d20 100644
--- a/src/lambda_function.py
+++ b/src/lambda_function.py
@@ -32,16 +32,17 @@ def lambda_handler(event, context):
     access_token_secret = os.getenv("ACCESS_TOKEN_SECRET")
 
     print("Authenticate")
-    auth = tweepy.OAuthHandler(consumer_key, consumer_secret)
-    auth.set_access_token(access_token, access_token_secret)
-    api = tweepy.API(auth)
+    client = tweepy.Client(
+                       consumer_key=consumer_key,
+                       consumer_secret=consumer_secret,
+                       access_token=access_token,
+                       access_token_secret=access_token_secret
+                    )
 
     print("Get tweet from csv file")
     tweets_file = ROOT / "tweets.csv"
-    recent_tweets = api.user_timeline()[:3]
     tweet = get_tweet(tweets_file)
-
-    print(f"Post tweet: {tweet}")
-    api.update_status(tweet)
+    print(f"Post tweet: {tweet}") 
+    client.create_tweet(text=tweet, user_auth=True)
 
     return {"statusCode": 200, "tweet": tweet}