diff --git a/deltachat-rpc-client/src/deltachat_rpc_client/account.py b/deltachat-rpc-client/src/deltachat_rpc_client/account.py
index 86ee9addb..b1e9fea63 100644
--- a/deltachat-rpc-client/src/deltachat_rpc_client/account.py
+++ b/deltachat-rpc-client/src/deltachat_rpc_client/account.py
@@ -20,7 +20,7 @@ class Account:
     id: int
 
     @property
-    def _rpc(self) -> Rpc:
+    def _rpc(self) -> "Rpc":
         return self.manager.rpc
 
     async def wait_for_event(self) -> AttrDict:
diff --git a/deltachat-rpc-client/src/deltachat_rpc_client/chat.py b/deltachat-rpc-client/src/deltachat_rpc_client/chat.py
index 443927b38..7dac7d2f4 100644
--- a/deltachat-rpc-client/src/deltachat_rpc_client/chat.py
+++ b/deltachat-rpc-client/src/deltachat_rpc_client/chat.py
@@ -22,7 +22,7 @@ class Chat:
     id: int
 
     @property
-    def _rpc(self) -> Rpc:
+    def _rpc(self) -> "Rpc":
         return self.account._rpc
 
     async def delete(self) -> None:
@@ -218,8 +218,8 @@ class Chat:
     async def get_locations(
         self,
         contact: Optional[Contact] = None,
-        timestamp_from: Optional[datetime] = None,
-        timestamp_to: Optional[datetime] = None,
+        timestamp_from: Optional["datetime"] = None,
+        timestamp_to: Optional["datetime"] = None,
     ) -> List[AttrDict]:
         """Get list of location snapshots for the given contact in the given timespan."""
         time_from = calendar.timegm(timestamp_from.utctimetuple()) if timestamp_from else 0
diff --git a/deltachat-rpc-client/src/deltachat_rpc_client/client.py b/deltachat-rpc-client/src/deltachat_rpc_client/client.py
index 1f1a14506..6f816e5de 100644
--- a/deltachat-rpc-client/src/deltachat_rpc_client/client.py
+++ b/deltachat-rpc-client/src/deltachat_rpc_client/client.py
@@ -39,7 +39,7 @@ class Client:
 
     def __init__(
         self,
-        account: Account,
+        account: "Account",
         hooks: Optional[Iterable[Tuple[Callable, Union[type, EventFilter]]]] = None,
         logger: Optional[logging.Logger] = None,
     ) -> None:
diff --git a/deltachat-rpc-client/src/deltachat_rpc_client/contact.py b/deltachat-rpc-client/src/deltachat_rpc_client/contact.py
index 9e9417790..efb3e9297 100644
--- a/deltachat-rpc-client/src/deltachat_rpc_client/contact.py
+++ b/deltachat-rpc-client/src/deltachat_rpc_client/contact.py
@@ -21,7 +21,7 @@ class Contact:
     id: int
 
     @property
-    def _rpc(self) -> Rpc:
+    def _rpc(self) -> "Rpc":
         return self.account._rpc
 
     async def block(self) -> None:
diff --git a/deltachat-rpc-client/src/deltachat_rpc_client/deltachat.py b/deltachat-rpc-client/src/deltachat_rpc_client/deltachat.py
index aea4ccd1f..c2cecd60d 100644
--- a/deltachat-rpc-client/src/deltachat_rpc_client/deltachat.py
+++ b/deltachat-rpc-client/src/deltachat_rpc_client/deltachat.py
@@ -13,7 +13,7 @@ class DeltaChat:
     This is the root of the object oriented API.
     """
 
-    def __init__(self, rpc: Rpc) -> None:
+    def __init__(self, rpc: "Rpc") -> None:
         self.rpc = rpc
 
     async def add_account(self) -> Account:
diff --git a/deltachat-rpc-client/src/deltachat_rpc_client/events.py b/deltachat-rpc-client/src/deltachat_rpc_client/events.py
index 0330c87d9..4896527b9 100644
--- a/deltachat-rpc-client/src/deltachat_rpc_client/events.py
+++ b/deltachat-rpc-client/src/deltachat_rpc_client/events.py
@@ -82,7 +82,7 @@ class RawEvent(EventFilter):
             return (self.types, self.func) == (other.types, other.func)
         return False
 
-    async def filter(self, event: AttrDict) -> bool:
+    async def filter(self, event: "AttrDict") -> bool:
         if self.types and event.type not in self.types:
             return False
         return await self._call_func(event)
@@ -120,7 +120,7 @@ class NewMessage(EventFilter):
         command: Optional[str] = None,
         is_bot: Optional[bool] = False,
         is_info: Optional[bool] = None,
-        func: Optional[Callable[[AttrDict], bool]] = None,
+        func: Optional[Callable[["AttrDict"], bool]] = None,
     ) -> None:
         super().__init__(func=func)
         self.is_bot = is_bot
@@ -159,7 +159,7 @@ class NewMessage(EventFilter):
             )
         return False
 
-    async def filter(self, event: AttrDict) -> bool:
+    async def filter(self, event: "AttrDict") -> bool:
         if self.is_bot is not None and self.is_bot != event.message_snapshot.is_bot:
             return False
         if self.is_info is not None and self.is_info != event.message_snapshot.is_info:
@@ -201,7 +201,7 @@ class MemberListChanged(EventFilter):
             return (self.added, self.func) == (other.added, other.func)
         return False
 
-    async def filter(self, event: AttrDict) -> bool:
+    async def filter(self, event: "AttrDict") -> bool:
         if self.added is not None and self.added != event.member_added:
             return False
         return await self._call_func(event)
@@ -233,7 +233,7 @@ class GroupImageChanged(EventFilter):
             return (self.deleted, self.func) == (other.deleted, other.func)
         return False
 
-    async def filter(self, event: AttrDict) -> bool:
+    async def filter(self, event: "AttrDict") -> bool:
         if self.deleted is not None and self.deleted != event.image_deleted:
             return False
         return await self._call_func(event)
@@ -258,7 +258,7 @@ class GroupNameChanged(EventFilter):
             return self.func == other.func
         return False
 
-    async def filter(self, event: AttrDict) -> bool:
+    async def filter(self, event: "AttrDict") -> bool:
         return await self._call_func(event)
 
 
diff --git a/deltachat-rpc-client/src/deltachat_rpc_client/message.py b/deltachat-rpc-client/src/deltachat_rpc_client/message.py
index 224931ba1..5ec30961a 100644
--- a/deltachat-rpc-client/src/deltachat_rpc_client/message.py
+++ b/deltachat-rpc-client/src/deltachat_rpc_client/message.py
@@ -18,7 +18,7 @@ class Message:
     id: int
 
     @property
-    def _rpc(self) -> Rpc:
+    def _rpc(self) -> "Rpc":
         return self.account._rpc
 
     async def send_reaction(self, *reaction: str):