diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index 94db14b..a9f0a84 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -64,7 +64,7 @@ jobs:
       shell: bash
       run: |
         ./.github/workflows/build-test nomypy
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       if: github.event_name == 'release' || contains(github.ref, 'refs/heads/wheel')
       with:
         name: artefacts
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index fce1a7c..9c7fcaa 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -30,7 +30,7 @@ jobs:
         cd .github/workflows/docs
         mkdir extensions
         ./build-docs -d ${GITHUB_WORKSPACE}/.github/workflows/docs/extensions
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         name: pytket-extension-docs
         path: .github/workflows/docs/extensions/