diff --git a/.github/workflows/pyodide.yml b/.github/workflows/pyodide.yml
index bbc66e9a..876a7ca5 100644
--- a/.github/workflows/pyodide.yml
+++ b/.github/workflows/pyodide.yml
@@ -3,16 +3,38 @@ name: Build pyodide wheel
 on:
   push:
     branches: [dev]
+  pull_request:
+    branches: [dev]
   workflow_dispatch:
 
-env:
-  PYTHON_VERSION: 3.12.2
-  PYODIDE_VERSION: 0.26.3
-  EMSCRIPTEN_VERSION: 3.1.58
-
 jobs:
   build-pyodide:
-    runs-on: macos-latest
+    # macOS because setup.py's Linux flags break the Emscripten build. Intel
+    # because GitHub is short on macOS arm64 runners, and jobs waiting for one
+    # were cancelled.
+    runs-on: macos-15-intel
+    strategy:
+      fail-fast: false
+      matrix:
+        # Each Pyodide ABI needs its own wheel. The host Python has to match the
+        # Python that Pyodide ships, and Emscripten has to match its build.
+        # `pyodide xbuildenv search --all` lists all three for each release.
+        include:
+          # Wheel used by shinylive releases before the move off Pyodide 0.27.
+          # Newer pyodide-build names it `pyemscripten_2024_0` instead of
+          # `pyodide_2024_0`, so keep the old one. It needs `wheel<0.46`.
+          - pyodide: 0.26.3
+            python: "3.12"
+            emscripten: 3.1.58
+            pyodide-build: 'pyodide-build==0.26.3 "wheel<0.46"'
+          - pyodide: 0.29.5
+            python: "3.13"
+            emscripten: 4.0.9
+            pyodide-build: "pyodide-build==0.39.3"
+          - pyodide: 314.0.7
+            python: "3.14"
+            emscripten: 5.0.3
+            pyodide-build: "pyodide-build==0.39.3"
     steps:
       - uses: actions/checkout@v4
         with:
@@ -20,24 +42,41 @@ jobs:
 
       - uses: actions/setup-python@v5
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
+          python-version: ${{ matrix.python }}
 
       - run: |
-          # Match pyodide version
-          # https://github.com/posit-dev/shinylive/blob/main/Makefile#L20C19-L20C25
-          pip install pyodide-build==0.26.3
-          if [ -z "${{ env.EMSCRIPTEN_VERSION }}"]; then
-            echo EMSCRIPTEN_VERSION=$(pyodide config get emscripten_version) >> $GITHUB_ENV
-          fi
+          pip install ${{ matrix.pyodide-build }}
+          pyodide xbuildenv install ${{ matrix.pyodide }}
 
       - uses: mymindstorm/setup-emsdk@v14
         with:
-          version: ${{ env.EMSCRIPTEN_VERSION }}
+          version: ${{ matrix.emscripten }}
 
       - run: pyodide build
 
+      - uses: actions/upload-artifact@v4
+        with:
+          name: wheel-${{ matrix.pyodide }}
+          path: dist/*.whl
+
+  deploy:
+    # Pull requests only build, so the wheels can be checked before they are
+    # published.
+    if: github.event_name != 'pull_request'
+    needs: build-pyodide
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          pattern: wheel-*
+          path: dist
+          merge-multiple: true
+
       - name: Deploy
         uses: peaceiris/actions-gh-pages@v4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./dist
+          # Add to the wheels already published instead of replacing them.
+          # Released versions of shinylive download older wheels from here.
+          keep_files: true