diff --git a/optimization/README.md b/optimization/README.md
index 184c021..6dfa074 100644
--- a/optimization/README.md
+++ b/optimization/README.md
@@ -27,3 +27,9 @@ uvx marimo edit https://github.com/marimo-team/learn/blob/main/optimization/01_l
 
 You can also open notebooks in our online playground by appending `marimo.app/`
 to a notebook's URL: [marimo.app/github.com/marimo-team/learn/blob/main/optimization/01_least_squares.py](https://marimo.app/https://github.com/marimo-team/learn/blob/main/optimization/01_least_squares.py).
+
+**Authors.**
+
+Thanks to all our notebook authors!
+
+* [Akshay Agrawal](https://github.com/akshayka)
diff --git a/polars/01_why_polars.py b/polars/01_why_polars.py
index 4bc3893..111140d 100644
--- a/polars/01_why_polars.py
+++ b/polars/01_why_polars.py
@@ -25,6 +25,8 @@ def _(mo):
         """
         # An introduction to Polars
 
+        _By [Koushik Khan](https://github.com/koushikkhan)._
+
         This notebook provides a birds-eye overview of [Polars](https://pola.rs/), a fast and user-friendly data manipulation library for Python, and compares it to alternatives like Pandas and PySpark.
 
         Like Pandas and PySpark, the central data structure in Polars is **the DataFrame**, a tabular data structure consisting of named columns. For example, the next cell constructs a DataFrame that records the gender, age, and height in centimeters for a number of individuals.
diff --git a/polars/README.md b/polars/README.md
index 515db5d..2eb9da0 100644
--- a/polars/README.md
+++ b/polars/README.md
@@ -8,7 +8,7 @@ This collection of marimo notebooks is designed to teach you the basics of data
 
 Any notebook with the status "🚧" needs a contributor! Please file an issue if you plan to contribute.
 
-| Notebook               | Description                                                                  | Status |
+| Notebook               | Description                                                                  | Status | 
 | ---------------------- | ---------------------------------------------------------------------------- | ------ |
 | Why Polars             | An introduction to Polars and its advantages over other Dataframe libraries. | ✅     |
 | Series                 | Homogenous columns of data                                                   | 🚧     |
@@ -30,3 +30,9 @@ Any notebook with the status "🚧" needs a contributor! Please file an issue if
 ```bash
 uvx marimo edit <file_url>
 ```
+
+**Authors.**
+
+Thanks to all our notebook authors!
+
+* [Koushik Khan](https://github.com/koushikkhan)
diff --git a/probability/README.md b/probability/README.md
index 24472fd..44f8bb9 100644
--- a/probability/README.md
+++ b/probability/README.md
@@ -20,3 +20,10 @@ uvx marimo edit https://github.com/marimo-team/learn/blob/main/probability/01_se
 
 You can also open notebooks in our online playground by appending `marimo.app/`
 to a notebook's URL: [marimo.app/https://github.com/marimo-team/learn/blob/main/probability/01_sets.py](https://marimo.app/https://github.com/marimo-team/learn/blob/main/probability/01_sets.py).
+
+
+**Authors.**
+
+Thanks to all our notebook authors!
+
+* [Srihari Thyagarajan](https://github.com/Haleshot)
diff --git a/python/README.md b/python/README.md
index b83eec7..0c381d6 100644
--- a/python/README.md
+++ b/python/README.md
@@ -17,3 +17,9 @@ uvx marimo edit https://github.com/marimo-team/learn/blob/main/python/001_number
 
 You can also open notebooks in our online playground by appending `marimo.app/`
 to a notebook's URL: [marimo.app/https://github.com/marimo-team/learn/blob/main/python/001_numbers.py](https://marimo.app/https://github.com/marimo-team/learn/blob/main/python/001_numbers.py).
+
+**Authors.**
+
+Thanks to all our notebook authors!
+
+* [Srihari Thyagarajan](https://github.com/Haleshot)