diff --git a/locust/dispatch.py b/locust/dispatch.py
index 5542f8a117..5ea7adec61 100644
--- a/locust/dispatch.py
+++ b/locust/dispatch.py
@@ -90,13 +90,13 @@ def __init__(self, worker_nodes: list[WorkerNode], user_classes: list[type[User]
         assert len(user_classes) > 0
         assert len(set(self._user_classes)) == len(self._user_classes)
 
-        self._target_user_count: int = None
+        self._target_user_count: int = 0
 
-        self._spawn_rate: float = None
+        self._spawn_rate: float = 0.0
 
-        self._user_count_per_dispatch_iteration: int = None
+        self._user_count_per_dispatch_iteration: int = 0
 
-        self._wait_between_dispatch: float = None
+        self._wait_between_dispatch: float = 0.0
 
         self._initial_users_on_workers = {
             worker_node.id: {user_class.__name__: 0 for user_class in self._user_classes}
@@ -107,7 +107,8 @@ def __init__(self, worker_nodes: list[WorkerNode], user_classes: list[type[User]
 
         self._current_user_count = self.get_current_user_count()
 
-        self._dispatcher_generator: Generator[dict[str, dict[str, int]], None, None] = None
+        self._dispatcher_generator: Generator[dict[str, dict[str, int]], None, None] = None  # type: ignore
+        # a generator is assigned (in new_dispatch()) to _dispatcher_generator before it's used
 
         self._user_generator = self._user_gen()
 
@@ -131,7 +132,7 @@ def get_current_user_count(self) -> int:
         return sum(map(sum, map(dict.values, self._users_on_workers.values())))
 
     @property
-    def dispatch_in_progress(self):
+    def dispatch_in_progress(self) -> bool:
         return self._dispatch_in_progress
 
     @property
diff --git a/pyproject.toml b/pyproject.toml
index 4227ac1f47..56841bacda 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -203,10 +203,6 @@ locust = ["locust"]
 ignore_missing_imports = true
 python_version = "3.9"
 
-[[tool.mypy.overrides]]
-module = ["locust.dispatch"]
-strict_optional = false
-
 [tool.pyright]
 exclude = ["locust/test"]
 reportOptionalMemberAccess = "none"