diff --git a/README.md b/README.md
index fd55743..4cad22b 100644
--- a/README.md
+++ b/README.md
@@ -4,13 +4,34 @@
 [![PyPI - Wheel](https://img.shields.io/pypi/wheel/scanitd)](https://pypi.org/project/scanitd/#files)
 [![license](https://img.shields.io/pypi/l/scanitd.svg)](https://github.com/ylab-hi/ScanITD/blob/main/LICENSE)
 
-- **PyPI**
 
-```bash
-pip install scanitd
-```
+# 📦 Installation
 
-# Usage
+ScanITD can be installed using pip, the Python package installer.
+Follow these steps to install:
+
+1. Ensure you have Python 3.10 or later installed on your system.
+
+2. Create a virtual environment (recommended):
+
+   ```bash
+   python -m venv scanitd_env
+   source scanitd_env/bin/activate  # On Windows use `scanitd_env\Scripts\activate`
+   ```
+
+3. Install ScanITD:
+
+   ```bash
+   pip install scanitd
+   ```
+
+4. Verify the installation:
+
+   ```bash
+   scanitd --help
+   ```
+
+# 🛠️ Usage
 
  Usage: scanitd [OPTIONS]
 
@@ -67,6 +88,6 @@ pip install scanitd
 * `--version`, `-v`
     - Show version and exit
 
-# Citation
+# 📚 Citation
 
 Wang TY. and Yang R. [ScanITD: Detecting internal tandem duplication with robust variant allele frequency estimation](https://doi.org/10.1093/gigascience/giaa089 "ScanITD: Detecting internal tandem duplication with robust variant allele frequency estimation").
diff --git a/pyproject.toml b/pyproject.toml
index dfd982c..8573e95 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "scanitd"
-version = "0.9.0"
+version = "0.9.1"
 description = "ScanITD"
 authors = [
     "Ting-You Wang <tywang@northwestern.edu>",
@@ -12,10 +12,11 @@ repository = "https://github.com/ylab-hi/ScanITD"
 documentation = "https://scanitd.readthedocs.io"
 classifiers = [
     "Development Status :: 4 - Beta",
-    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3 :: Only"
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
 ]
 
 [tool.poetry.urls]