diff --git a/.github/workflows/test_benchmark_collection_models.yml b/.github/workflows/test_benchmark_collection_models.yml
index 64d6a869b0..a2f797305a 100644
--- a/.github/workflows/test_benchmark_collection_models.yml
+++ b/.github/workflows/test_benchmark_collection_models.yml
@@ -72,7 +72,7 @@ jobs:
 
     - name: Codecov Python
       if: (github.event_name == 'pull_request' || github.repository_owner == 'AMICI-dev') && github.actor != 'dependabot[bot]'
-      uses: codecov/codecov-action@v5
+      uses: codecov/codecov-action@v6
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         files: coverage_py.xml
@@ -150,7 +150,7 @@ jobs:
 
     - name: Codecov Python
       if: (github.event_name == 'pull_request' || github.repository_owner == 'AMICI-dev') && github.actor != 'dependabot[bot]'
-      uses: codecov/codecov-action@v5
+      uses: codecov/codecov-action@v6
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         files: coverage_py.xml
diff --git a/.github/workflows/test_petab_sciml.yml b/.github/workflows/test_petab_sciml.yml
index 192724a566..c2bac98810 100644
--- a/.github/workflows/test_petab_sciml.yml
+++ b/.github/workflows/test_petab_sciml.yml
@@ -83,7 +83,7 @@ jobs:
 
       - name: Codecov
         if: (github.event_name == 'pull_request' || github.repository_owner == 'AMICI-dev') && github.actor != 'dependabot[bot]'
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v6
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           files: coverage_petab_sciml.xml
diff --git a/.github/workflows/test_petab_test_suite.yml b/.github/workflows/test_petab_test_suite.yml
index 14828ab6de..6be6e54e58 100644
--- a/.github/workflows/test_petab_test_suite.yml
+++ b/.github/workflows/test_petab_test_suite.yml
@@ -109,8 +109,8 @@ jobs:
             tests/petab_test_suite/test_petab_suite.py
 
       - name: Codecov
-        if: github.event_name == 'pull_request' || github.repository_owner == 'AMICI-dev'
-        uses: codecov/codecov-action@v5
+        if: (github.event_name == 'pull_request' || github.repository_owner == 'AMICI-dev') && github.actor != 'dependabot[bot]'
+        uses: codecov/codecov-action@v6
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           files: coverage.xml
@@ -202,7 +202,7 @@ jobs:
 
       - name: Codecov
         if: (github.event_name == 'pull_request' || github.repository_owner == 'AMICI-dev') && github.actor != 'dependabot[bot]'
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v6
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           files: coverage.xml
diff --git a/.github/workflows/test_python_cplusplus.yml b/.github/workflows/test_python_cplusplus.yml
index dfc420dccb..bcabb161ee 100644
--- a/.github/workflows/test_python_cplusplus.yml
+++ b/.github/workflows/test_python_cplusplus.yml
@@ -85,7 +85,7 @@ jobs:
 
     - name: Codecov Python
       if: (github.event_name == 'pull_request' || github.repository_owner == 'AMICI-dev') && github.actor != 'dependabot[bot]'
-      uses: codecov/codecov-action@v5
+      uses: codecov/codecov-action@v6
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         files: build/coverage_py.xml
@@ -105,7 +105,7 @@ jobs:
 
     - name: Codecov CPP
       if: (github.event_name == 'pull_request' || github.repository_owner == 'AMICI-dev') && github.actor != 'dependabot[bot]'
-      uses: codecov/codecov-action@v5
+      uses: codecov/codecov-action@v6
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         files: coverage.info
@@ -169,7 +169,7 @@ jobs:
 
     - name: Codecov Python
       if: (github.event_name == 'pull_request' || github.repository_owner == 'AMICI-dev') && github.actor != 'dependabot[bot]'
-      uses: codecov/codecov-action@v5
+      uses: codecov/codecov-action@v6
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         files: build/coverage_py.xml
@@ -189,7 +189,7 @@ jobs:
 
     - name: Codecov CPP
       if: (github.event_name == 'pull_request' || github.repository_owner == 'AMICI-dev') && github.actor != 'dependabot[bot]'
-      uses: codecov/codecov-action@v5
+      uses: codecov/codecov-action@v6
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         files: coverage.info
diff --git a/.github/workflows/test_sbml_semantic_test_suite.yml b/.github/workflows/test_sbml_semantic_test_suite.yml
index 97725662f5..2183ab18f9 100644
--- a/.github/workflows/test_sbml_semantic_test_suite.yml
+++ b/.github/workflows/test_sbml_semantic_test_suite.yml
@@ -54,7 +54,7 @@ jobs:
 
     - name: Codecov SBMLSuite
       if: (github.event_name == 'pull_request' || github.repository_owner == 'AMICI-dev') && github.actor != 'dependabot[bot]'
-      uses: codecov/codecov-action@v5
+      uses: codecov/codecov-action@v6
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         files: coverage_SBMLSuite.xml
diff --git a/.github/workflows/test_sbml_semantic_test_suite_jax.yml b/.github/workflows/test_sbml_semantic_test_suite_jax.yml
index 7cebe2ad3d..030d9719ba 100644
--- a/.github/workflows/test_sbml_semantic_test_suite_jax.yml
+++ b/.github/workflows/test_sbml_semantic_test_suite_jax.yml
@@ -52,7 +52,7 @@ jobs:
 
     - name: Codecov SBMLSuiteJax
       if: (github.event_name == 'pull_request' || github.repository_owner == 'AMICI-dev') && github.actor != 'dependabot[bot]'
-      uses: codecov/codecov-action@v5
+      uses: codecov/codecov-action@v6
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         files: coverage_SBMLSuite_jax.xml