diff --git a/README.md b/README.md
index 6791722..eaae35c 100644
--- a/README.md
+++ b/README.md
@@ -1 +1 @@
-# A parity tensor package.
+# A parity tensor package. [![ci](https://github.com/hzhangxyz/parity_tensor/actions/workflows/pre-commit.yml/badge.svg)](https://github.com/hzhangxyz/parity_tensor/actions/workflows/pre-commit.yml) [![codecov](https://codecov.io/gh/hzhangxyz/parity_tensor/graph/badge.svg?token=YPXIRQTOY8)](https://codecov.io/gh/hzhangxyz/parity_tensor)