diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index a045199a..cc7c8209 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -113,7 +113,7 @@ jobs:
                 command: cd(fullfile(getenv('GITHUB_WORKSPACE'), '.github', 'workflows')); run tests_matlab;
 
         -   name: Code coverage matlab
-            uses: codecov/codecov-action@v4
+            uses: codecov/codecov-action@v5
             with:
                 file: coverage.xml
                 flags: ${{ matrix.os }}_matlab-${{ matrix.matlab }}_fast
@@ -203,7 +203,7 @@ jobs:
                 command: cd(fullfile(getenv('GITHUB_WORKSPACE'), '.github', 'workflows')); global SLOW; SLOW=true; run tests_matlab;
 
         -   name: Code coverage matlab
-            uses: codecov/codecov-action@v4
+            uses: codecov/codecov-action@v5
             with:
                 file: coverage.xml
                 flags: ${{ matrix.os }}_matlab-${{ matrix.matlab }}_slow
diff --git a/.github/workflows/tests_octave.yml b/.github/workflows/tests_octave.yml
index 65072457..4c6ef792 100644
--- a/.github/workflows/tests_octave.yml
+++ b/.github/workflows/tests_octave.yml
@@ -154,7 +154,7 @@ jobs:
 
         -   name: Code coverage
             if: matrix.test_type == 'unit'
-            uses: codecov/codecov-action@v4
+            uses: codecov/codecov-action@v5
             with:
                 file: coverage.xml
                 flags: octave
diff --git a/.github/workflows/tests_windows.yml b/.github/workflows/tests_windows.yml
index 398e3166..3b0bc69a 100644
--- a/.github/workflows/tests_windows.yml
+++ b/.github/workflows/tests_windows.yml
@@ -125,7 +125,7 @@ jobs:
 
         -   name: Code coverage matlab
             if: matrix.test_type == 'unit'
-            uses: codecov/codecov-action@v4
+            uses: codecov/codecov-action@v5
             with:
                 file: coverage.xml
                 flags: ${{ matrix.os }}_matlab-${{ matrix.matlab }}_${{ matrix.mode }}