diff --git a/.github/workflows/emscripten.yml b/.github/workflows/emscripten.yml
index 22437d05c7..88fc6ff7e6 100644
--- a/.github/workflows/emscripten.yml
+++ b/.github/workflows/emscripten.yml
@@ -66,7 +66,7 @@ jobs:
           source .venv-pyodide/bin/activate
           python -m pip install dist/*.whl
           python -m pip install pytest pytest-cov
-          python -m pytest -v --cov=zarr --cov-config=pyproject.toml zarr
+          python -m pytest -v --cov=zarr --cov-config=pyproject.toml
 
       - name: Upload Pyodide wheel artifact for debugging
         # FIXME: Remove after this is ready to merge
diff --git a/pyproject.toml b/pyproject.toml
index e7e89c5670..da57fdbea6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -249,7 +249,7 @@ minversion = "7"
 testpaths = ["tests"]
 log_cli_level = "INFO"
 xfail_strict = true
-asyncio_mode = "auto"
+# asyncio_mode = "auto"
 doctest_optionflags = [
     "NORMALIZE_WHITESPACE",
     "ELLIPSIS",
diff --git a/tests/v3/_shared.py b/tests/v3/_shared.py
new file mode 100644
index 0000000000..d853a02675
--- /dev/null
+++ b/tests/v3/_shared.py
@@ -0,0 +1,16 @@
+# A common file that can be used to add constants, functions,
+# convenience classes, etc. that are shared across multiple tests
+
+import platform
+import sys
+
+import pytest
+
+IS_WASM = sys.platform == "emscripten" or platform.machine() in ["wasm32", "wasm64"]
+
+
+def asyncio_tests_wrapper(func):
+    if IS_WASM:
+        return func
+    else:
+        return pytest.mark.asyncio(func)
diff --git a/tests/v3/test_buffer.py b/tests/v3/test_buffer.py
index 2f58d116fe..07ef96bf6e 100644
--- a/tests/v3/test_buffer.py
+++ b/tests/v3/test_buffer.py
@@ -5,11 +5,12 @@
 
 import numpy as np
 import numpy.typing as npt
-import pytest
 
 from zarr.array import AsyncArray
 from zarr.buffer import ArrayLike, NDArrayLike, NDBuffer
 
+from ._shared import asyncio_tests_wrapper
+
 if TYPE_CHECKING:
     from typing_extensions import Self
 
@@ -45,7 +46,7 @@ def test_nd_array_like(xp):
     assert isinstance(ary, NDArrayLike)
 
 
-@pytest.mark.asyncio
+@asyncio_tests_wrapper
 async def test_async_array_factory(store_path):
     expect = np.zeros((9, 9), dtype="uint16", order="F")
     a = await AsyncArray.create(