diff --git a/piker/brokers/ib.py b/piker/brokers/ib.py
index 89a8fe11..c8f8a102 100644
--- a/piker/brokers/ib.py
+++ b/piker/brokers/ib.py
@@ -26,7 +26,7 @@ from dataclasses import asdict
 from datetime import datetime
 from functools import partial
 from typing import (
-    List, Dict, Any, Tuple, Optional,
+    Any, Optional,
     AsyncIterator, Awaitable,
 )
 import asyncio
@@ -226,8 +226,8 @@ class Client:
         self.ib.RaiseRequestErrors = True
 
         # contract cache
-        self._contracts: Dict[str, Contract] = {}
-        self._feeds: Dict[str, trio.abc.SendChannel] = {}
+        self._contracts: dict[str, Contract] = {}
+        self._feeds: dict[str, trio.abc.SendChannel] = {}
 
         # NOTE: the ib.client here is "throttled" to 45 rps by default
 
@@ -242,7 +242,7 @@ class Client:
         period_count: int = int(2e3),  # <- max per 1s sample query
 
         is_paid_feed: bool = False,  # placeholder
-    ) -> List[Dict[str, Any]]:
+    ) -> list[dict[str, Any]]:
         """Retreive OHLCV bars for a symbol over a range to the present.
         """
         bars_kwargs = {'whatToShow': 'TRADES'}
@@ -369,7 +369,7 @@ class Client:
         upto: int = 3,
         asdicts: bool = True,
 
-    ) -> Dict[str, ContractDetails]:
+    ) -> dict[str, ContractDetails]:
 
         # TODO add search though our adhoc-locally defined symbol set
         # for futes/cmdtys/
@@ -399,7 +399,7 @@ class Client:
         # ``wrapper.starTicker()`` currently cashes ticker instances
         # which means getting a singel quote will potentially look up
         # a quote for a ticker that it already streaming and thus run
-        # into state clobbering (eg. List: Ticker.ticks). It probably
+        # into state clobbering (eg. list: Ticker.ticks). It probably
         # makes sense to try this once we get the pub-sub working on
         # individual symbols...
 
@@ -660,7 +660,7 @@ class Client:
     async def positions(
         self,
         account: str = '',
-    ) -> List[Position]:
+    ) -> list[Position]:
         """
         Retrieve position info for ``account``.
         """
@@ -1067,12 +1067,12 @@ asset_type_map = {
 }
 
 
-_quote_streams: Dict[str, trio.abc.ReceiveStream] = {}
+_quote_streams: dict[str, trio.abc.ReceiveStream] = {}
 
 
 async def _setup_quote_stream(
     symbol: str,
-    opts: Tuple[int] = ('375', '233', '236'),
+    opts: tuple[int] = ('375', '233', '236'),
     contract: Optional[Contract] = None,
 ) -> None:
     """Stream a ticker using the std L1 api.
@@ -1148,13 +1148,13 @@ async def start_aio_quote_stream(
 async def stream_quotes(
 
     send_chan: trio.abc.SendChannel,
-    symbols: List[str],
+    symbols: list[str],
     shm: ShmArray,
     feed_is_live: trio.Event,
     loglevel: str = None,
 
     # startup sync
-    task_status: TaskStatus[Tuple[Dict, Dict]] = trio.TASK_STATUS_IGNORED,
+    task_status: TaskStatus[tuple[dict, dict]] = trio.TASK_STATUS_IGNORED,
 
 ) -> None:
     """Stream symbol quotes.
@@ -1285,7 +1285,7 @@ async def stream_quotes(
             # last = time.time()
 
 
-def pack_position(pos: Position) -> Dict[str, Any]:
+def pack_position(pos: Position) -> dict[str, Any]:
     con = pos.contract
 
     if isinstance(con, Option):
@@ -1367,7 +1367,7 @@ async def trades_dialogue(
     ctx: tractor.Context,
     loglevel: str = None,
 
-) -> AsyncIterator[Dict[str, Any]]:
+) -> AsyncIterator[dict[str, Any]]:
 
     # XXX: required to propagate ``tractor`` loglevel to piker logging
     get_console_log(loglevel or tractor.current_actor().loglevel)