diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 55b6734..9de62e4 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -17,7 +17,7 @@ jobs:
         python-version: '3.11'
     - run: pip install . matplotlib pycryptodome rc4
     - run: nice -19 python benchmark.py -o benchmark.svg
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         name: benchmark
         path: benchmark.svg
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 1a6a05c..479d475 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -19,7 +19,7 @@ jobs:
       with:
         python-version: '3.11'
     - run: python setup.py sdist --verbose
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         path: dist/arc4-*.tar.gz
   build-wheels:
@@ -46,7 +46,7 @@ jobs:
         python-version: "${{ matrix.python-version }}"
     - run: pip install wheel
     - run: python setup.py bdist_wheel
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         path: dist/*whl
   build-manylinux-wheels:
@@ -69,7 +69,7 @@ jobs:
     - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
     - run: /opt/python/${{ matrix.python-version }}/bin/pip wheel .
     - run: auditwheel repair arc4-*-linux*.whl --plat manylinux_2_28_x86_64
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         path: wheelhouse/arc4-*-manylinux*.whl
   deploy:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8387348..65657b3 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -36,7 +36,7 @@ jobs:
         gcov -o build/temp.* arc4.c
         rm -f *.h.gcov
         ./cc-test-reporter format-coverage --input-type gcov --output 'coverage.${{ matrix.python-version }}.xml' .
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         name: coverages
         path: coverage.${{ matrix.python-version }}.xml