diff --git a/README.md b/README.md
index 6d8ee42..032a322 100644
--- a/README.md
+++ b/README.md
@@ -4,13 +4,13 @@
 
 ### For users
 
-1. Install [Python>=3.6](https://www.python.org/) and [pip](https://pip.pypa.io/)
+1. Install [Python>=3.9](https://www.python.org/) and [pip](https://pip.pypa.io/)
 2. Install the project by `pip install git+ssh://git@focs.ji.sjtu.edu.cn:2222/JOJ/JOJ3-config-generator.git`
 3. Run it by `joj3-config-generator --help`
 
 ### For developers
 
 1. Clone this repo by `ssh://git@focs.ji.sjtu.edu.cn:2222/JOJ/JOJ3-config-generator.git`
-2. Install [Python>=3.6](https://www.python.org/) and [PDM](https://pdm-project.org/)
+2. Install [Python>=3.9](https://www.python.org/) and [PDM](https://pdm-project.org/)
 3. Install deps by `pdm install && pdm run pre-commit install`.
 4. Run the cli app by `pdm run app --help`