diff --git a/.github/workflows/run_tests_matlab.yml b/.github/workflows/run_tests_matlab.yml
index ea3f5c3..2a8924e 100644
--- a/.github/workflows/run_tests_matlab.yml
+++ b/.github/workflows/run_tests_matlab.yml
@@ -61,7 +61,7 @@ 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 7037e5e..b70e4d0 100644
--- a/.github/workflows/run_tests_octave.yml
+++ b/.github/workflows/run_tests_octave.yml
@@ -70,7 +70,7 @@ jobs:
         octave $OCTFLAGS --eval "cd(fullfile(getenv('GITHUB_WORKSPACE'), '.github', 'workflows')); run tests_octave;"
 
     - name: Code coverage
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       with:
         file: coverage.xml
         flags: octave