diff --git a/notebooks/unit3/unit3.ipynb b/notebooks/unit3/unit3.ipynb
index 6b9378d..bcd3410 100644
--- a/notebooks/unit3/unit3.ipynb
+++ b/notebooks/unit3/unit3.ipynb
@@ -7,7 +7,7 @@
         "colab_type": "text"
       },
       "source": [
-        "<a href=\"https://colab.research.google.com/github/huggingface/deep-rl-class/blob/main/notebooks/unit3.ipynb\" target=\"_parent\"><img src=\"https://colab.research.google.com/assets/colab-badge.svg\" alt=\"Open In Colab\"/></a>"
+        "<a href=\"https://colab.research.google.com/github/huggingface/deep-rl-class/blob/main/notebooks/unit3/unit3.ipynb\" target=\"_parent\"><img src=\"https://colab.research.google.com/assets/colab-badge.svg\" alt=\"Open In Colab\"/></a>"
       ]
     },
     {
@@ -42,13 +42,13 @@
     {
       "cell_type": "markdown",
       "source": [
-        "### 🎮 Environments: \n",
+        "### 🎮 Environments:\n",
         "\n",
         "- [SpacesInvadersNoFrameskip-v4](https://gymnasium.farama.org/environments/atari/space_invaders/)\n",
         "\n",
         "You can see the difference between Space Invaders versions here 👉 https://gymnasium.farama.org/environments/atari/space_invaders/#variants\n",
         "\n",
-        "### 📚 RL-Library: \n",
+        "### 📚 RL-Library:\n",
         "\n",
         "- [RL-Baselines3-Zoo](https://github.com/DLR-RM/rl-baselines3-zoo)"
       ],
@@ -90,7 +90,7 @@
         "\n",
         "- 📖 Study Deep Reinforcement Learning in **theory and practice**.\n",
         "- 🧑‍💻 Learn to **use famous Deep RL libraries** such as Stable Baselines3, RL Baselines3 Zoo, CleanRL and Sample Factory 2.0.\n",
-        "- 🤖 Train **agents in unique environments** \n",
+        "- 🤖 Train **agents in unique environments**\n",
         "\n",
         "And more check 📚 the syllabus 👉 https://simoninithomas.github.io/deep-rl-course\n",
         "\n",
@@ -109,7 +109,7 @@
         "## Prerequisites 🏗️\n",
         "Before diving into the notebook, you need to:\n",
         "\n",
-        "🔲 📚 **[Study Deep Q-Learning by reading Unit 3](https://huggingface.co/deep-rl-course/unit3/introduction)**  🤗 "
+        "🔲 📚 **[Study Deep Q-Learning by reading Unit 3](https://huggingface.co/deep-rl-course/unit3/introduction)**  🤗"
       ]
     },
     {
@@ -150,7 +150,7 @@
         "\n",
         "Also, we're going to **train it for 90 minutes with 1M timesteps**. By typing `!nvidia-smi` will tell you what GPU you're using.\n",
         "\n",
-        "And if you want to train more such 10 million steps, this will take about 9 hours, potentially resulting in Colab timing out. In that case, I recommend running this on your local computer (or somewhere else). Just click on: `File>Download`. "
+        "And if you want to train more such 10 million steps, this will take about 9 hours, potentially resulting in Colab timing out. In that case, I recommend running this on your local computer (or somewhere else). Just click on: `File>Download`."
       ],
       "metadata": {
         "id": "Nc8BnyVEc3Ys"
@@ -193,31 +193,10 @@
     {
       "cell_type": "code",
       "source": [
-        "# For now we install this update of RL-Baselines3 Zoo\n",
-        "!pip install git+https://github.com/DLR-RM/rl-baselines3-zoo@update/hf"
+        "!pip install git+https://github.com/DLR-RM/rl-baselines3-zoo"
       ],
       "metadata": {
-        "id": "hLTwHqIWdnPb"
-      },
-      "execution_count": null,
-      "outputs": []
-    },
-    {
-      "cell_type": "markdown",
-      "source": [
-        "IF AND ONLY IF THE VERSION ABOVE DOES NOT EXIST ANYMORE. UNCOMMENT AND INSTALL THE ONE BELOW"
-      ],
-      "metadata": {
-        "id": "p0xe2sJHdtHy"
-      }
-    },
-    {
-      "cell_type": "code",
-      "source": [
-        "#!pip install rl_zoo3==2.0.0a9"
-      ],
-      "metadata": {
-        "id": "N0d6wy-F-f39"
+        "id": "S1A_E4z3awa_"
       },
       "execution_count": null,
       "outputs": []
@@ -259,7 +238,7 @@
       "source": [
         "## Create a virtual display 🔽\n",
         "\n",
-        "During the notebook, we'll need to generate a replay video. To do so, with colab, **we need to have a virtual screen to be able to render the environment** (and thus record the frames). \n",
+        "During the notebook, we'll need to generate a replay video. To do so, with colab, **we need to have a virtual screen to be able to render the environment** (and thus record the frames).\n",
         "\n",
         "Hence the following cell will install the librairies and create and run a virtual screen 🖥"
       ],
@@ -341,10 +320,10 @@
         "Here we see that:\n",
         "- We use the `Atari Wrapper` that preprocess the input (Frame reduction ,grayscale, stack 4 frames)\n",
         "- We use `CnnPolicy`, since we use Convolutional layers to process the frames\n",
-        "- We train it for 10 million `n_timesteps` \n",
+        "- We train it for 10 million `n_timesteps`\n",
         "- Memory (Experience Replay) size is 100000, aka the amount of experience steps you saved to train again your agent with.\n",
         "\n",
-        "💡 My advice is to **reduce the training timesteps to 1M,** which will take about 90 minutes on a P100. `!nvidia-smi` will tell you what GPU you're using. At 10 million steps, this will take about 9 hours, which could likely result in Colab timing out. I recommend running this on your local computer (or somewhere else). Just click on: `File>Download`. "
+        "💡 My advice is to **reduce the training timesteps to 1M,** which will take about 90 minutes on a P100. `!nvidia-smi` will tell you what GPU you're using. At 10 million steps, this will take about 9 hours, which could likely result in Colab timing out. I recommend running this on your local computer (or somewhere else). Just click on: `File>Download`."
       ]
     },
     {
@@ -423,7 +402,7 @@
       },
       "outputs": [],
       "source": [
-        "!python -m rl_zoo3.enjoy  --algo dqn  --env SpaceInvadersNoFrameskip-v4  --no-render  --n-timesteps _________  --folder logs/ "
+        "!python -m rl_zoo3.enjoy  --algo dqn  --env SpaceInvadersNoFrameskip-v4  --no-render  --n-timesteps _________  --folder logs/"
       ]
     },
     {
@@ -495,7 +474,7 @@
         "id": "9O6FI0F8HnzE"
       },
       "source": [
-        "- Copy the token \n",
+        "- Copy the token\n",
         "- Run the cell below and past the token"
       ]
     },
@@ -595,7 +574,7 @@
       "source": [
         "Congrats 🥳 you've just trained and uploaded your first Deep Q-Learning agent using RL-Baselines-3 Zoo. The script above should have displayed a link to a model repository such as https://huggingface.co/ThomasSimonini/dqn-SpaceInvadersNoFrameskip-v4. When you go to this link, you can:\n",
         "\n",
-        "- See a **video preview of your agent** at the right. \n",
+        "- See a **video preview of your agent** at the right.\n",
         "- Click \"Files and versions\" to see all the files in the repository.\n",
         "- Click \"Use in stable-baselines3\" to get a code snippet that shows how to load the model.\n",
         "- A model card (`README.md` file) which gives a description of the model and the hyperparameters you used.\n",
@@ -711,7 +690,7 @@
         "\n",
         "Here's a list of environments you can try to train your agent with:\n",
         "- BeamRiderNoFrameskip-v4\n",
-        "- BreakoutNoFrameskip-v4 \n",
+        "- BreakoutNoFrameskip-v4\n",
         "- EnduroNoFrameskip-v4\n",
         "- PongNoFrameskip-v4\n",
         "\n",
@@ -756,7 +735,7 @@
     {
       "cell_type": "markdown",
       "source": [
-        "See you on Bonus unit 2! 🔥 "
+        "See you on Bonus unit 2! 🔥"
       ],
       "metadata": {
         "id": "Kc3udPT-RcXc"
@@ -829,4 +808,4 @@
   },
   "nbformat": 4,
   "nbformat_minor": 0
-}
+}
\ No newline at end of file