diff --git a/.github/workflows/run_tests_matlab.yml b/.github/workflows/run_tests_matlab.yml
index 32410b1..2737a36 100644
--- a/.github/workflows/run_tests_matlab.yml
+++ b/.github/workflows/run_tests_matlab.yml
@@ -55,7 +55,7 @@ jobs:
         command: cd(fullfile(getenv('GITHUB_WORKSPACE'), '.github', 'workflows')); run tests_matlab;
 
     - name: Code coverage
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       with:
         file: coverage.xml
         flags: ${{ matrix.os }}_matlab-${{ matrix.version }}
diff --git a/.github/workflows/run_tests_octave.yml b/.github/workflows/run_tests_octave.yml
index ba31c78..fc6fdfc 100644
--- a/.github/workflows/run_tests_octave.yml
+++ b/.github/workflows/run_tests_octave.yml
@@ -42,7 +42,7 @@ jobs:
         cover_xml_file: coverage.xml
 
     - name: Code coverage
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       with:
         file: coverage.xml
         flags: octave