diff --git a/.github/workflows/test_petab_test_suite.yml b/.github/workflows/test_petab_test_suite.yml
index 7e86a70d66..265d8c429a 100644
--- a/.github/workflows/test_petab_test_suite.yml
+++ b/.github/workflows/test_petab_test_suite.yml
@@ -101,7 +101,7 @@ jobs:
 
       - name: Codecov
         if: github.event_name == 'pull_request' || github.repository_owner == 'AMICI-dev'
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           file: coverage.xml
diff --git a/.github/workflows/test_python_cplusplus.yml b/.github/workflows/test_python_cplusplus.yml
index fcb1067b85..c13b7c385b 100644
--- a/.github/workflows/test_python_cplusplus.yml
+++ b/.github/workflows/test_python_cplusplus.yml
@@ -79,7 +79,7 @@ jobs:
 
     - name: Codecov Python
       if: github.event_name == 'pull_request' || github.repository_owner == 'AMICI-dev'
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         file: build/coverage_py.xml
@@ -99,7 +99,7 @@ jobs:
 
     - name: Codecov CPP
       if: github.event_name == 'pull_request' || github.repository_owner == 'AMICI-dev'
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         file: coverage.info
@@ -161,7 +161,7 @@ jobs:
 
     - name: Codecov Python
       if: github.event_name == 'pull_request' || github.repository_owner == 'AMICI-dev'
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         file: build/coverage_py.xml
@@ -181,7 +181,7 @@ jobs:
 
     - name: Codecov CPP
       if: github.event_name == 'pull_request' || github.repository_owner == 'AMICI-dev'
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         file: coverage.info
diff --git a/.github/workflows/test_sbml_semantic_test_suite.yml b/.github/workflows/test_sbml_semantic_test_suite.yml
index 69c78d44b4..f09e59c93f 100644
--- a/.github/workflows/test_sbml_semantic_test_suite.yml
+++ b/.github/workflows/test_sbml_semantic_test_suite.yml
@@ -55,7 +55,7 @@ jobs:
 
     - name: Codecov SBMLSuite
       if: github.event_name == 'pull_request' || github.repository_owner == 'AMICI-dev'
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         file: coverage_SBMLSuite.xml