diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 8af067f3..1d6c3d15 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -67,6 +67,8 @@ We use `pytest` to test our code. You can run the tests by running the following
 poetry run pytest
 ```
 
+Several packages have been removed from Poetry to make the package lighter. Therefore, it is recommended to install the missing libraries individually to ensure all tests pass.
+
 Make sure that all tests pass before submitting a pull request.
 
 ## 🚀 Release Process