diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0aa3cda6..2827333d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -139,6 +139,11 @@ jobs:
         coverage html -d coverage/html
         genbadge coverage -i coverage/coverage.xml -o coverage/badge.svg
 
+    - name: Upload coverage reports to Codecov
+      uses: codecov/codecov-action@v3
+      env:
+        CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+
     - name: Commit and push
       if: github.event_name == 'pull_request'
       uses: EndBug/add-and-commit@v9
diff --git a/README.md b/README.md
index b05f7589..dc22c489 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 ![PyPI - License](https://img.shields.io/pypi/l/capsula)
 ![PyPI - Python Version](https://img.shields.io/pypi/pyversions/capsula)
 ![Test Status](https://github.com/shunichironomura/capsula/workflows/Test/badge.svg?event=push&branch=main)
-![Coverage Status](coverage/badge.svg?dummy=8484744)
+[![codecov](https://codecov.io/gh/shunichironomura/capsula/graph/badge.svg?token=BZXF2PPDM0)](https://codecov.io/gh/shunichironomura/capsula)
 ![PyPI - Downloads](https://img.shields.io/pypi/dm/capsula)
 
 > [!NOTE]