diff --git a/.github/workflows/extensive_test.yml b/.github/workflows/extensive_test.yml
index e7b8f6b00..a6df4ba91 100644
--- a/.github/workflows/extensive_test.yml
+++ b/.github/workflows/extensive_test.yml
@@ -233,9 +233,13 @@ jobs:
         mpiexec -n 2 coverage run -m unittest discover -k "mpi" -s tests -v
         mpiexec -n 3 --oversubscribe coverage run -m unittest discover -k "mpi" -s tests -v
 
+    - name: ls to see if coverage files were produced
+      if: contains(matrix.test-type, 'unit')
+      run: ls
+
     - name: Upload uncombined coverage to github
       if: contains(matrix.test-type, 'unit')
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: gh-actions-parallel-coverage
         path: .coverage.*
@@ -276,7 +280,7 @@ jobs:
         coverage xml
 
     - name: Upload coverage to github
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: tox-gh-actions-coverage
         path: coverage.xml
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index aa32be2e1..8c20240ac 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -200,6 +200,10 @@ jobs:
         mpiexec -n 2 coverage run -m unittest discover -k "mpi" -s tests -v
         mpiexec -n 3 --oversubscribe coverage run -m unittest discover -k "mpi" -s tests -v
 
+    - name: ls to see if coverage files were produced
+      if: contains(matrix.test-type, 'unit')
+      run: ls
+
     - name: Combine coverage reports
       if: contains(matrix.test-type, 'unit')
       run: | 
@@ -209,7 +213,7 @@ jobs:
 
     - name: Upload coverage to github
       if: contains(matrix.test-type, 'unit')
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: tox-gh-actions-coverage
         path: coverage.xml
diff --git a/.github/workflows/wheel.yml b/.github/workflows/wheel.yml
index f2593af6c..92694dec6 100644
--- a/.github/workflows/wheel.yml
+++ b/.github/workflows/wheel.yml
@@ -28,7 +28,7 @@ jobs:
           CIBW_SKIP: cp27-* cp36-* cp37-*
           CIBW_DEPENDENCY_VERSIONS: latest
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           path: ./wheelhouse/*.whl
 
@@ -56,7 +56,7 @@ jobs:
       - name: Build sdist
         run: python -m build -s -o dist .
         
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           path: dist/*.tar.gz