diff --git a/README.md b/README.md
index 71d7587..494b9b6 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,7 @@
 ![PyPI - Downloads](https://img.shields.io/pypi/dw/pystatpower)
 
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
+[![codecov](https://codecov.io/gh/PyStatPower/PyStatPower/graph/badge.svg?token=P9UWC8Q4P6)](https://codecov.io/gh/PyStatPower/PyStatPower)
 
 PyStatPower 是一个专注于统计领域功效分析的开源的 Python 库。
 
diff --git a/cspell.json b/cspell.json
index 2e6c441..be733ce 100644
--- a/cspell.json
+++ b/cspell.json
@@ -6,6 +6,7 @@
   "language": "en",
   // words - list of words to be always considered correct
   "words": [
+    "codecov",
     "scipy",
     "pingouin",
     "pystatpower",