diff --git a/.coveralls.yml b/.coveralls.yml
deleted file mode 100644
index 7a56699e7..000000000
--- a/.coveralls.yml
+++ /dev/null
@@ -1 +0,0 @@
-repo_token: RveV3eluajy2H7DcSypIy432u2T7rsPus
diff --git a/.github/workflows/pipeline.yml b/.github/workflows/pipeline.yml
index 05ca8d3a3..3e401863c 100644
--- a/.github/workflows/pipeline.yml
+++ b/.github/workflows/pipeline.yml
@@ -133,9 +133,11 @@ jobs:
         pip install . --no-deps --no-build-isolation
         coverage run  --omit="structuretoolkit/_version.py,tests/*" -m unittest discover tests
         coverage xml
-    - name: Coverage
-      if:  matrix.label == 'linux-64-py-3-12'
-      uses: coverallsapp/github-action@v2
+    - name: Upload coverage reports to Codecov
+      if: matrix.label == 'linux-64-py-3-12'
+      uses: codecov/codecov-action@v5
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }}
 
   unittest_old:
     needs: [black]
@@ -171,4 +173,4 @@ jobs:
         run: gh pr merge --auto --squash "$PR_URL"
         env:
           PR_URL: ${{github.event.pull_request.html_url}}
-          GH_TOKEN: ${{secrets.GITHUB_TOKEN}}
\ No newline at end of file
+          GH_TOKEN: ${{secrets.GITHUB_TOKEN}}
diff --git a/README.md b/README.md
index fde77f9af..1a2bf951e 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # structuretoolkit 
 
 [![Pipeline](https://github.com/pyiron/structuretoolkit/actions/workflows/pipeline.yml/badge.svg)](https://github.com/pyiron/structuretoolkit/actions/workflows/pipeline.yml)
-[![Coverage Status](https://coveralls.io/repos/github/pyiron/structuretoolkit/badge.svg?branch=main)](https://coveralls.io/github/pyiron/structuretoolkit?branch=main)
+[![codecov](https://codecov.io/gh/pyiron/structuretoolkit/graph/badge.svg?token=B6I4OACKND)](https://codecov.io/gh/pyiron/structuretoolkit)
 
 Originally developed as part of the `pyiron_atomistics` module the `structuretoolkit` was release as standalone library
 for analysing, building and visualising atomistic structures. Internally it uses the `ase.atoms.Atoms` class to