diff --git a/README.md b/README.md
index d96b9a1..8a7c794 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 ## Databend UDF Server SDK
 This library provides a SDK for creating user-defined functions (UDF) server in Databend.
 
-![Python](https://img.shields.io/pypi/v/databend-udf)
+[![Python](https://img.shields.io/pypi/v/databend-udf)](https://pypi.org/project/databend-udf/)
 
 ### Introduction
 Databend supports user-defined functions implemented as external functions. With the Databend Python UDF API, users can define custom UDFs using Python and start a Python process as a UDF server. Then users can call the customized UDFs in Databend. Databend will remotely access the UDF server to execute the defined functions.
diff --git a/python/README.md b/python/README.md
index 367adc5..772b9d0 100644
--- a/python/README.md
+++ b/python/README.md
@@ -124,6 +124,7 @@ The data types supported by the Python UDF API and their corresponding python ty
 | DATE                | datetime.date     |
 | TIMESTAMP           | datetime.datetime |
 | VARCHAR             | str               |
+| BINARY              | bytes             |
 | VARIANT             | any               |
 | MAP(K,V)            | dict              |
 | ARRAY(T)            | list[T]           |
@@ -136,7 +137,7 @@ The NULL in sql is represented by None in Python.
 
 ```sh
 # start UDF server
-python3 udf_test.py
+python3 examples/server.py
 ```
 
 ```sh
diff --git a/python/pyproject.toml b/python/pyproject.toml
index bd430c8..92b252b 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -7,7 +7,7 @@ classifiers = [
 description = "Databend UDF Server"
 license = { text = "Apache-2.0" }
 name = "databend-udf"
-version = "0.2.0"
+version = "0.2.1"
 readme = "README.md"
 requires-python = ">=3.7"
 dependencies = ["pyarrow"]