diff --git a/.github/workflows/mypy.yml b/.github/workflows/mypy.yml
index 98f91e4f..cce977e1 100644
--- a/.github/workflows/mypy.yml
+++ b/.github/workflows/mypy.yml
@@ -18,7 +18,7 @@ jobs:
       fail-fast: false
       matrix:
         os: ["ubuntu-latest"]
-        python-version: ["3.9"]
+        python-version: ["3.11"]
 
     steps:
       - name: Checkout source
diff --git a/cubed/runtime/executors/asyncio.py b/cubed/runtime/executors/asyncio.py
index 84c58115..7e4ab86d 100644
--- a/cubed/runtime/executors/asyncio.py
+++ b/cubed/runtime/executors/asyncio.py
@@ -53,7 +53,7 @@ async def async_map_unordered(
                 if backup:
                     if not backup.done() or not backup.exception():
                         continue
-                raise task.exception()
+                raise task.exception()  # type: ignore
             end_times[task] = time.monotonic()
             if return_stats:
                 result, stats = task.result()
diff --git a/cubed/runtime/executors/python_async.py b/cubed/runtime/executors/python_async.py
index a19df14c..a2a61f97 100644
--- a/cubed/runtime/executors/python_async.py
+++ b/cubed/runtime/executors/python_async.py
@@ -128,6 +128,7 @@ async def async_execute_dag(
     compute_arrays_in_parallel: Optional[bool] = None,
     **kwargs,
 ) -> None:
+    concurrent_executor: Executor
     use_processes = kwargs.pop("use_processes", False)
     if use_processes:
         max_workers = kwargs.pop("max_workers", None)
diff --git a/setup.cfg b/setup.cfg
index 8eba3c7a..62965f08 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -24,6 +24,8 @@ ignore_missing_imports = True
 ignore_missing_imports = True
 [mypy-array_api_compat.*]
 ignore_missing_imports = True
+[mypy-cloudpickle.*]
+ignore_missing_imports = True
 [mypy-coiled.*]
 ignore_missing_imports = True
 [mypy-dask.*]