diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 271899b8..d67f7b42 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -58,9 +58,11 @@ jobs:
           python -m pydocstyle -v
       if: matrix.python-version == env.TEST_PYTHON_VERSION && matrix.os == env.TEST_OS
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
       with:
           fail_ci_if_error: true
+      env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
       if: matrix.python-version == env.TEST_PYTHON_VERSION && matrix.os == env.TEST_OS
     - name: cProfile
       run: |
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a15a3233..36d289ad 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ## [Unreleased]
 ### Changed
 - `README.md` modified
+- Logo updated
 ## [1.4] - 2024-03-16
 ### Added
 - `feature_request.yml` template
diff --git a/README.md b/README.md
index 3a9ab724..b9e64df7 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 <div align="center">
-	<img src="https://github.com/ECSIM/opem/raw/master/otherfile/logo.png" width=300px>
+	<img src="https://github.com/ECSIM/opem/raw/master/otherfile/logo.png" width=320px>
 	<br/>
 	<a href="https://www.python.org/">
 		<img src="https://img.shields.io/badge/built%20with-Python3-green.svg" alt="built with Python3" />
diff --git a/otherfile/icon.ico b/otherfile/icon.ico
index 450b94a7..ef0e7473 100644
Binary files a/otherfile/icon.ico and b/otherfile/icon.ico differ
diff --git a/otherfile/logo.png b/otherfile/logo.png
index d44426a5..f10bc593 100644
Binary files a/otherfile/logo.png and b/otherfile/logo.png differ