diff --git a/.github/workflows/build-docs.yml b/.github/workflows/build-docs.yml
index ac340fe..2e18483 100644
--- a/.github/workflows/build-docs.yml
+++ b/.github/workflows/build-docs.yml
@@ -73,7 +73,7 @@ jobs:
       - name: Build Docs with Insiders
         if: github.event_name != 'pull_request' || github.secret_source == 'Actions'
         run: python -m mkdocs build --config-file mkdocs.insiders.yml
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: docs-site
           path: ./site/**
diff --git a/.github/workflows/deploy-docs.yml b/.github/workflows/deploy-docs.yml
index 47cf9ad..5509e55 100644
--- a/.github/workflows/deploy-docs.yml
+++ b/.github/workflows/deploy-docs.yml
@@ -19,18 +19,16 @@ jobs:
         run: |
           rm -rf ./site
           mkdir ./site
-      - name: Download Artifact Docs
-        id: download
-        uses: dawidd6/action-download-artifact@v3.1.4
+      - uses: actions/download-artifact@v4
         with:
-          if_no_artifact_found: ignore
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-          workflow: build-docs.yml
-          run_id: ${{ github.event.workflow_run.id }}
-          name: docs-site
           path: ./site/
+          pattern: docs-site
+          merge-multiple: true
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          run-id: ${{ github.event.workflow_run.id }}
       - name: Deploy to Cloudflare Pages
-        if: steps.download.outputs.found_artifact == 'true'
+        # hashFiles returns an empty string if there are no files
+        if: hashFiles('./site/*')
         id: deploy
         uses: cloudflare/pages-action@v1
         with:
diff --git a/.github/workflows/smokeshow.yml b/.github/workflows/smokeshow.yml
index 63a5926..1548509 100644
--- a/.github/workflows/smokeshow.yml
+++ b/.github/workflows/smokeshow.yml
@@ -20,12 +20,14 @@ jobs:
 
       - run: pip install smokeshow
 
-      - uses: dawidd6/action-download-artifact@v3.1.4
+      - uses: actions/download-artifact@v4
         with:
-          workflow: test.yml
-          commit: ${{ github.event.workflow_run.head_sha }}
+          name: coverage-html
+          path: htmlcov
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          run-id: ${{ github.event.workflow_run.id }}
 
-      - run: smokeshow upload coverage-html
+      - run: smokeshow upload htmlcov
         env:
           SMOKESHOW_GITHUB_STATUS_DESCRIPTION: Coverage {coverage-percentage}
           SMOKESHOW_GITHUB_COVERAGE_THRESHOLD: 100
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ec3dc5a..dda4798 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -69,9 +69,9 @@ jobs:
           COVERAGE_FILE: coverage/.coverage.${{ runner.os }}-py${{ matrix.python-version }}
           CONTEXT: ${{ runner.os }}-py${{ matrix.python-version }}
       - name: Store coverage files
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
-          name: coverage
+          name: coverage-${{ matrix.python-version }}-${{ matrix.anyio-version }}
           path: coverage
   coverage-combine:
     needs:
@@ -86,10 +86,11 @@ jobs:
           python-version: '3.8'
 
       - name: Get coverage files
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
-          name: coverage
+          pattern: coverage-*
           path: coverage
+          merge-multiple: true
 
       - run: pip install coverage[toml]
 
@@ -99,7 +100,7 @@ jobs:
       - run: coverage html --show-contexts --title "Coverage for ${{ github.sha }}"
 
       - name: Store coverage HTML
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: coverage-html
           path: htmlcov