diff --git a/piker/data/_sampling.py b/piker/data/_sampling.py
index d31bf7b1..4228f809 100644
--- a/piker/data/_sampling.py
+++ b/piker/data/_sampling.py
@@ -22,14 +22,16 @@ financial data flows.
 from __future__ import annotations
 from collections import Counter
 import time
+from typing import TYPE_CHECKING
 
 import tractor
 import trio
 from trio_typing import TaskStatus
 
-from ._sharedmem import ShmArray
 from ..log import get_logger
 
+if TYPE_CHECKING:
+    from ._sharedmem import ShmArray
 
 log = get_logger(__name__)
 
diff --git a/piker/data/feed.py b/piker/data/feed.py
index 260cab9b..19504204 100644
--- a/piker/data/feed.py
+++ b/piker/data/feed.py
@@ -20,6 +20,7 @@ Data feed apis and infra.
 This module is enabled for ``brokerd`` daemons.
 
 """
+from __future__ import annotations
 from dataclasses import dataclass, field
 from contextlib import asynccontextmanager
 from functools import partial