diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index b9843906..fcf4783e 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -48,7 +48,7 @@ jobs:
           lcov --remove coverage.info "*.h" --ignore-errors unused \
                --output-file coverage.info
           cp coverage.info build/coverage-${{ matrix.python-version }}.info
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         with:
           name: coverage-${{ matrix.python-version }}
           path: |
@@ -75,7 +75,7 @@ jobs:
       - run: |
           diff-cover build/coverage*.info --fail-under=100 \
             --compare-branch=origin/master
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         with:
           name: coverage
           path: |
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index bc195d5f..ce27b7b9 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -24,7 +24,7 @@ jobs:
     - run: python -m build -s
       env:
         PKG_CONFIG_PATH: ${{ github.workspace }}/.local/lib/pkgconfig
-    - uses: actions/upload-artifact@v5
+    - uses: actions/upload-artifact@v6
       with:
         name: python-gmp-sdist
         path: dist/
diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
index 7a751b1f..895e4fb3 100644
--- a/.github/workflows/wheels.yml
+++ b/.github/workflows/wheels.yml
@@ -42,7 +42,7 @@ jobs:
         if: ${{ startsWith(matrix.os, 'windows') }}
       - name: Build wheels
         uses: pypa/cibuildwheel@v3.3.0
-      - uses: actions/upload-artifact@v5
+      - uses: actions/upload-artifact@v6
         with:
           name: wheels-${{ matrix.os }}
           path: ./wheelhouse/
@@ -51,7 +51,7 @@ jobs:
     needs: build_wheels
     steps:
       - name: Merge Wheels
-        uses: actions/upload-artifact/merge@v5
+        uses: actions/upload-artifact/merge@v6
         with:
           name: python-gmp-wheels
           pattern: wheels-*