diff --git a/notebooks/unit1/requirements-unit1.txt b/notebooks/unit1/requirements-unit1.txt
index b67799f..5a5290d 100644
--- a/notebooks/unit1/requirements-unit1.txt
+++ b/notebooks/unit1/requirements-unit1.txt
@@ -1,5 +1,6 @@
 stable-baselines3[extra]
 box2d
 box2d-kengz
+box2d-py
 huggingface_sb3
-pyglet==1.5.1
\ No newline at end of file
+pyglet==1.5.1