diff --git a/docs/source/conf.py b/docs/source/conf.py
index cae9f45..c455c56 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -14,10 +14,14 @@
 from importlib.metadata import version
 from pathlib import Path
 from typing import TYPE_CHECKING
+from typing import Any
+from typing import cast
 
 import pytask_parallel
 
 if TYPE_CHECKING:
+    from collections.abc import Callable
+
     import sphinx  # ty: ignore[unresolved-import]
 
 
@@ -100,7 +104,9 @@
 
 
 # Linkcode, based on numpy doc/source/conf.py
-def linkcode_resolve(domain: str, info: dict[str, str]) -> str | None:  # noqa: C901
+def linkcode_resolve(  # noqa: C901, PLR0911
+    domain: str, info: dict[str, str]
+) -> str | None:
     """Determine the URL corresponding to Python object."""
     if domain != "py":
         return None
@@ -122,29 +128,35 @@ def linkcode_resolve(domain: str, info: dict[str, str]) -> str | None:  # noqa:
         except AttributeError:  # noqa: PERF203
             return None
 
-    try:
-        fn = inspect.getsourcefile(inspect.unwrap(obj))  # ty: ignore[invalid-argument-type]
-    except TypeError:
-        try:  # property
-            fn = inspect.getsourcefile(inspect.unwrap(obj.fget))  # ty: ignore[possibly-unbound-attribute,invalid-argument-type]
-        except (AttributeError, TypeError):
-            fn = None
+    obj_for_source = obj if callable(obj) else getattr(obj, "fget", None)
+    if not callable(obj_for_source):
+        return None
+
+    fn = inspect.getsourcefile(
+        inspect.unwrap(cast("Callable[..., Any]", obj_for_source))
+    )
     if not fn:
         return None
 
     try:
         source, lineno = inspect.getsourcelines(obj)
     except TypeError:
-        try:  # property
-            source, lineno = inspect.getsourcelines(obj.fget)  # ty: ignore[possibly-unbound-attribute]
-        except (AttributeError, TypeError):
+        fget = getattr(obj, "fget", None)
+        if fget is None:
             lineno = None
+        else:
+            try:
+                source, lineno = inspect.getsourcelines(fget)
+            except TypeError:
+                lineno = None
     except OSError:
         lineno = None
 
     linespec = f"#L{lineno}-L{lineno + len(source) - 1}" if lineno else ""
 
-    fn = os.path.relpath(fn, start=Path(pytask_parallel.__file__).parent)  # ty: ignore[invalid-argument-type]
+    package_file = pytask_parallel.__file__
+    package_root = Path(package_file).parent if package_file else Path.cwd()
+    fn = os.path.relpath(fn, start=package_root)
 
     if "+" in pytask_parallel.__version__:
         return f"https://github.com/pytask-dev/pytask-parallel/blob/main/src/pytask_parallel/{fn}{linespec}"
diff --git a/src/pytask_parallel/execute.py b/src/pytask_parallel/execute.py
index f7cea9f..6eb6465 100644
--- a/src/pytask_parallel/execute.py
+++ b/src/pytask_parallel/execute.py
@@ -6,6 +6,7 @@
 import time
 from typing import TYPE_CHECKING
 from typing import Any
+from typing import cast
 
 import cloudpickle
 from _pytask.node_protocols import PPathNode
@@ -209,7 +210,7 @@ def pytask_execute_task(session: Session, task: PTask) -> Future[WrapperResult]:
         task_module = get_module(task.function, getattr(task, "path", None))
         cloudpickle.register_pickle_by_value(task_module)
 
-        return wrapper_func.submit(  # ty: ignore[possibly-unbound-attribute,invalid-return-type]
+        return cast("Any", wrapper_func).submit(
             task=task,
             console_options=console.options,
             kwargs=kwargs,
diff --git a/src/pytask_parallel/wrappers.py b/src/pytask_parallel/wrappers.py
index 7cb28f8..d483d3c 100644
--- a/src/pytask_parallel/wrappers.py
+++ b/src/pytask_parallel/wrappers.py
@@ -13,6 +13,7 @@
 from pathlib import Path
 from typing import TYPE_CHECKING
 from typing import Any
+from typing import cast
 
 from attrs import define
 from pytask import PNode
@@ -35,6 +36,7 @@
 from pytask_parallel.utils import CoiledFunction
 
 if TYPE_CHECKING:
+    from collections.abc import Callable
     from types import TracebackType
 
     from pytask import Mark
@@ -168,9 +170,11 @@ def wrap_task_in_process(  # noqa: PLR0913
 
 
 def rewrap_task_with_coiled_function(task: PTask) -> CoiledFunction:
-    return functools.wraps(wrap_task_in_process)(  # ty: ignore[invalid-return-type]
-        CoiledFunction(wrap_task_in_process, **task.attributes["coiled_kwargs"])  # ty: ignore[invalid-argument-type]
+    wrapped = CoiledFunction(wrap_task_in_process, **task.attributes["coiled_kwargs"])
+    decorated = functools.wraps(wrap_task_in_process)(
+        cast("Callable[..., Any]", wrapped)
     )
+    return cast("CoiledFunction", decorated)
 
 
 def _raise_exception_on_breakpoint(*args: Any, **kwargs: Any) -> None:  # noqa: ARG001
@@ -203,7 +207,7 @@ def _render_traceback_to_string(
 ) -> tuple[type[BaseException], BaseException, str]:
     """Process the exception and convert the traceback to a string."""
     traceback = Traceback(exc_info, show_locals=show_locals)
-    segments = console.render(traceback, options=console_options)  # ty: ignore[invalid-argument-type]
+    segments = console.render(cast("Any", traceback), options=console_options)
     text = "".join(segment.text for segment in segments)
     return (*exc_info[:2], text)  # ty: ignore[invalid-return-type]