diff --git a/flaxkv/__init__.py b/flaxkv/__init__.py
index d6cba89..c2ee1f6 100644
--- a/flaxkv/__init__.py
+++ b/flaxkv/__init__.py
@@ -19,7 +19,7 @@
 
 from .core import LevelDBDict, LMDBDict, RemoteDBDict
 
-__version__ = "0.2.7"
+__version__ = "0.2.7.1"
 
 __all__ = [
     "FlaxKV",
diff --git a/flaxkv/manager.py b/flaxkv/manager.py
index 2352101..be66c64 100644
--- a/flaxkv/manager.py
+++ b/flaxkv/manager.py
@@ -23,6 +23,7 @@
 import time
 import traceback
 from pathlib import Path
+from typing import Dict
 from uuid import uuid4
 
 import msgspec
@@ -32,6 +33,12 @@
 from .pack import decode, decode_key, encode
 
 
+class StructUpdateData(msgspec.Struct):
+    type: str
+    data: Dict[bytes, bytes]
+    time: float
+
+
 class DBManager:
     def __init__(
         self, db_type: str, root_path_or_url: str, db_name: str, rebuild=False, **kwargs
@@ -238,7 +245,6 @@ def __init__(
         backoff=2,
     )
     def attach_db(self, event: threading.Event):
-        from .serve.interface import StructUpdateData
 
         with self.client.stream(
             "POST",
diff --git a/flaxkv/serve/interface.py b/flaxkv/serve/interface.py
index 7c30a8a..dfeca50 100644
--- a/flaxkv/serve/interface.py
+++ b/flaxkv/serve/interface.py
@@ -55,9 +55,3 @@ class StructDeleteBatchData(msgspec.Struct):
     keys: List[bytes]
     client_id: str
     time: float
-
-
-class StructUpdateData(msgspec.Struct):
-    type: str
-    data: Dict[bytes, bytes]
-    time: float
diff --git a/pyproject.toml b/pyproject.toml
index bbda4f7..c110bbe 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -50,7 +50,7 @@ test = [
     "pytest",
     "pytest-aiohttp",
     "uvicorn",
-    "httpx",
+    "httpx[http2]",
     "pandas",
     "hypercorn",
     "uvloop; sys_platform == 'linux'",
@@ -61,11 +61,11 @@ server = [
     "hypercorn",
     "uvloop; sys_platform == 'linux'",
     "litestar>=2.5.0",
-    "httpx",
+    "httpx[http2]",
 ]
 
 client = [
-    "httpx",
+    "httpx[http2]",
 ]