diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index a6c12813..15ea2497 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -15,7 +15,7 @@ jobs:
       with:
         build-artifact-name: none
         build-artifact-path: none
-        pyodide-versions: "0.27.2,0.26.4"
+        pyodide-versions: "0.29.3,0.28.3,0.27.2,0.26.4"
 
   deploy:
     runs-on: ubuntu-24.04
diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index 8cfb8969..d55e07b9 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -12,7 +12,11 @@ on:
       pyodide-version:
         required: false
         type: string
-        default: "0.27.2"
+        default: "0.29.3"
+      python-version:
+        required: false
+        type: string
+        default: "3.13"
       os:
         required: false
         type: string
@@ -102,7 +106,7 @@ jobs:
 
       - uses: actions/setup-python@42375524e23c412d93fb67b49958b491fce71c38 # v5.4.0
         with:
-          python-version: 3.12
+          python-version: ${{ inputs.python-version }}
 
       - name: install pyodide-py
         run: |
diff --git a/.github/workflows/testall.yaml b/.github/workflows/testall.yaml
index f4d32454..0381345b 100644
--- a/.github/workflows/testall.yaml
+++ b/.github/workflows/testall.yaml
@@ -80,6 +80,7 @@ jobs:
       build-artifact-name: ${{ inputs.build-artifact-name }}
       build-artifact-path: ${{ inputs.build-artifact-path }}
       pyodide-version: ${{ matrix.pyodide_version }}
+      python-version: ${{ matrix.python_version }}
       os: ${{ matrix.os }}
       runner: ${{ matrix.runner }}
       browser: ${{ matrix.browser }}
diff --git a/COMPATIBILITY.md b/COMPATIBILITY.md
index d69621e3..73ee4d4c 100644
--- a/COMPATIBILITY.md
+++ b/COMPATIBILITY.md
@@ -3,16 +3,16 @@
 Following versions of pytest-pyodide and Pyodide are tested in CI.
 Other versions may work, however with no guarantee.
 
-| pytest-pyodide | Tested Pyodide versions |
-| -------------- | ----------------------- |
-| main branch    | 0.26.4, 0.27.2          |
-| 0.58.*         | 0.24.1, 0.25.1, 0.26.1  |
-| 0.57.*         | 0.23.4, 0.24.1, 0.25.1  |
-| 0.56.*         | 0.23.4, 0.24.1          |
-| 0.55.*         | 0.23.4, 0.24.1          |
-| 0.54.*         | 0.23.4, 0.24.1          |
-| 0.53.*         | 0.23.2, 0.22.0          |
-| 0.52.*         | 0.23.2, 0.22.0          |
-| 0.51.*         | 0.23.2, 0.22.0, 0.21.3  |
-| 0.50.*         | 0.22.0, 0.21.3          |
-| 0.23.*         | 0.21.0                  |
+| pytest-pyodide | Tested Pyodide versions        |
+| -------------- | ------------------------------ |
+| main branch    | 0.26.4, 0.27.2, 0.28.3, 0.29.3 |
+| 0.58.*         | 0.24.1, 0.25.1, 0.26.1         |
+| 0.57.*         | 0.23.4, 0.24.1, 0.25.1         |
+| 0.56.*         | 0.23.4, 0.24.1                 |
+| 0.55.*         | 0.23.4, 0.24.1                 |
+| 0.54.*         | 0.23.4, 0.24.1                 |
+| 0.53.*         | 0.23.2, 0.22.0                 |
+| 0.52.*         | 0.23.2, 0.22.0                 |
+| 0.51.*         | 0.23.2, 0.22.0, 0.21.3         |
+| 0.50.*         | 0.22.0, 0.21.3                 |
+| 0.23.*         | 0.21.0                         |
diff --git a/tests/test_doctest.py b/tests/test_doctest.py
index 114b23d2..923fc43e 100644
--- a/tests/test_doctest.py
+++ b/tests/test_doctest.py
@@ -1,3 +1,4 @@
+import re
 from pathlib import Path
 from textwrap import dedent
 
@@ -83,19 +84,25 @@ def pytest_fixture_setup(self, fixturedef, request):
     result.assertoutcome(passed=2, failed=1)
     result.getfailures()[0]
     captured = capsys.readouterr()
-    # The indentation is different here in Python 3.12 vs Python 3.13...
+    # The indentation is different here in Python 3.12 vs Python 3.13 vs Python 3.14...
     expected = dedent(
         """
-        003     >>> from js import Object # doctest: +RUN_IN_PYODIDE
-        004     >>> 1 == 2
+        003 >>> from js import Object # doctest: +RUN_IN_PYODIDE
+        004 >>> 1 == 2
         Expected:
             True
         Got:
             False
         """
     ).strip()
-    print(captured.out)
-    assert expected in captured.out
+
+    def normalize(s):
+        return re.sub(r" +>", " >", s)
+
+    result = normalize(captured.out)
+    print(result)
+
+    assert expected in result
 
 
 def test_doctest_collect(pytester):
diff --git a/utils/build_test_matrix.py b/utils/build_test_matrix.py
index 062138a9..a874f162 100644
--- a/utils/build_test_matrix.py
+++ b/utils/build_test_matrix.py
@@ -18,6 +18,27 @@
 DEFAULT_PLAYWRIGHT_VERSION = "1.44.0"
 
 
+@dataclasses.dataclass
+class VersionPair:
+    pyodide_version: tuple[int, int]
+    python_version: str
+
+
+PYODIDE_TO_PYTHON_VERSION: list[VersionPair] = [
+    VersionPair(pyodide_version=(0, 28), python_version="3.13"),
+    VersionPair(pyodide_version=(0, 25), python_version="3.12"),
+    VersionPair(pyodide_version=(0, 23), python_version="3.11"),
+]
+
+
+def python_version_for_pyodide(pyodide_version: str) -> str:
+    pyodide_ver = tuple(int(x) for x in pyodide_version.split(".")[:2])
+    for pair in PYODIDE_TO_PYTHON_VERSION:
+        if pyodide_ver >= pair.pyodide_version:
+            return pair.python_version
+    return "3.10"
+
+
 @dataclasses.dataclass
 class TestConfig:
     pyodide_version: str
@@ -26,6 +47,7 @@ class TestConfig:
     browser: str
     browser_version: str = ""
     playwright_version: str = ""
+    python_version: str = ""
 
     @property
     def runtime(self) -> str:
@@ -130,7 +152,13 @@ def build_configs(args: dict[str, list[str]]) -> list[TestConfig]:
     for _os, _pyodide_version, _runner, _browser in itertools.product(
         os, pyodide_version, runner, browser
     ):
-        config = TestConfig(_pyodide_version, _os, _runner, _browser)
+        config = TestConfig(
+            _pyodide_version,
+            _os,
+            _runner,
+            _browser,
+            python_version=python_version_for_pyodide(_pyodide_version),
+        )
 
         if not is_valid_config(config):
             continue