diff --git a/.github/workflows/primer_run_main.yaml b/.github/workflows/primer_run_main.yaml
index 4b8a2ef9b..206a4dd94 100644
--- a/.github/workflows/primer_run_main.yaml
+++ b/.github/workflows/primer_run_main.yaml
@@ -88,7 +88,7 @@ jobs:
           . venv/bin/activate
           python tests/primer/__main__.py prepare --clone
       - name: Upload output diff
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: primer_commitstring
           path: tests/.pylint_primer_tests/commit_string.txt
@@ -104,7 +104,7 @@ jobs:
           then echo "::warning ::$WARNINGS"
           fi
       - name: Upload output
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: primer_output
           path:
diff --git a/.github/workflows/primer_run_pr.yaml b/.github/workflows/primer_run_pr.yaml
index 710c4eab5..0a5b7fca1 100644
--- a/.github/workflows/primer_run_pr.yaml
+++ b/.github/workflows/primer_run_pr.yaml
@@ -175,14 +175,14 @@ jobs:
           then echo "::warning ::$WARNINGS"
           fi
       - name: Upload output of PR
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: primer_output_pr
           path:
             tests/.pylint_primer_tests/output_${{ steps.python.outputs.python-version
             }}_pr.txt
       - name: Upload output of 'main'
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: primer_output_main
           path: output_${{ steps.python.outputs.python-version }}_main.txt
@@ -192,7 +192,7 @@ jobs:
         run: |
           echo ${{ github.event.pull_request.number }} | tee pr_number.txt
       - name: Upload PR number
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: pr_number
           path: pr_number.txt
diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index a21d79a0e..70597d3f6 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -63,7 +63,7 @@ jobs:
           . venv/bin/activate
           pytest -vv --minimal-messages-config tests/test_functional.py
       - name: Upload coverage artifact
-        uses: actions/upload-artifact@v3.1.0
+        uses: actions/upload-artifact@v4
         with:
           name: coverage-${{ matrix.python-version }}
           path: .coverage
@@ -158,7 +158,7 @@ jobs:
         run: >-
           echo "::set-output name=datetime::"$(date "+%Y%m%d_%H%M")
       - name: Upload benchmark artifact
-        uses: actions/upload-artifact@v3.1.0
+        uses: actions/upload-artifact@v4
         with:
           name:
             benchmark-${{ runner.os }}-${{ matrix.python-version }}_${{