diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 537542d..a24b66c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -28,6 +28,10 @@ jobs:
           - 'v6.5.3'
           - 'v6.1.7'
           - 'v5.4.3'
+          - 'v5.3.4'
+          - 'v5.2.4'
+          - 'v5.1.5'
+          - 'v4.0.15'
     name: test_${{ matrix.python-version }}_tidb_${{ matrix.tidb-version }}
     runs-on: ubuntu-latest
     container:
diff --git a/README.md b/README.md
index 2bcf06e..2be9c95 100644
--- a/README.md
+++ b/README.md
@@ -25,16 +25,29 @@ from sqlalchemy import create_engine
 engine = create_engine("tidb://username:password@ip:port/database_name?charset=utf8mb4")
 ```
 
-## testing
+## Testing this dialect with SQLAlchemy and Alembic
+
+Bootstrap your environment with virtualenv and requirements installed
+
+```bash
+make bootstrap
+```
 
 You can run the tests using the following command:
 
 ```bash
-tox
-# or test for a specified python version
+make all
+# Or running test with `tox` for a specified python version
 tox -e py39
+# Or running test directly using `pytest`
+pytest "test/test_suite.py::DateTest"
 ```
 
+To know more about developing the TiDB dialect, checkout the guide on sqlalchemy:
+
+* https://github.com/sqlalchemy/sqlalchemy/blob/rel_1_4/README.dialects.rst
+* https://github.com/sqlalchemy/sqlalchemy/blob/rel_1_4/README.unittests.rst
+
 ## Known issues
 
 - TiDB only support `FOREIGN KEY` constraints since v6.6.0([#18209](https://github.com/pingcap/tidb/issues/18209)).