diff --git a/asab/storage/mongodb.py b/asab/storage/mongodb.py
index e5c37eae0..bd1086b32 100644
--- a/asab/storage/mongodb.py
+++ b/asab/storage/mongodb.py
@@ -181,7 +181,7 @@ async def execute(self, custom_data: typing.Optional[dict] = None):
 		# 			pass
 		# 	obj[k] = o
 
-		if self.Storage.WebhookURI is not None:
+		if self.Storage.WebhookURIs is not None:
 			webhook_data = {
 				"collection": self.Collection,
 			}
@@ -205,6 +205,6 @@ async def execute(self, custom_data: typing.Optional[dict] = None):
 				upsertor_data["unset"] = {k: v for k, v in self.ModUnset.items() if not k.startswith("__")}
 			webhook_data["upsertor"] = upsertor_data
 
-			await self._webhook(webhook_data)
+			await self.webhook(webhook_data)
 
 		return self.ObjId
diff --git a/asab/storage/service.py b/asab/storage/service.py
index 017da459d..b21b0e9bc 100644
--- a/asab/storage/service.py
+++ b/asab/storage/service.py
@@ -1,8 +1,9 @@
 import abc
 import secrets
 import hashlib
-
+import logging
 import asab
+import re
 
 try:
 	import cryptography.hazmat.primitives.ciphers
@@ -11,6 +12,12 @@
 except ModuleNotFoundError:
 	cryptography = None
 
+#
+
+L = logging.getLogger(__name__)
+
+#
+
 
 ENCRYPTED_PREFIX = b"$aes-cbc$"
 
@@ -19,7 +26,13 @@ class StorageServiceABC(asab.Service):
 
 	def __init__(self, app, service_name):
 		super().__init__(app, service_name)
-		self.WebhookURI = asab.Config.get("asab:storage:changestream", "webhook_uri", fallback="") or None
+		self.WebhookURIs = asab.Config.get("asab:storage:changestream", "webhook_uri", fallback="") or None
+		if self.WebhookURIs is not None:
+			self.WebhookURIs = [uri for uri in re.split(r"\s+", self.WebhookURIs) if len(uri) > 0]
+			try:
+				self.ProactorService = app.get_service("asab.ProactorService")
+			except KeyError as e:
+				raise Exception("Storage webhooks require ProactorService") from e
 		self.WebhookAuth = asab.Config.get("asab:storage:changestream", "webhook_auth", fallback="") or None
 
 		# Specify a non-empty AES key to enable AES encryption of selected fields
diff --git a/asab/storage/upsertor.py b/asab/storage/upsertor.py
index 40a45aedf..25044fe8b 100644
--- a/asab/storage/upsertor.py
+++ b/asab/storage/upsertor.py
@@ -4,8 +4,8 @@
 import hashlib
 import datetime
 import logging
-import aiohttp
 import asab.web.rest.json
+import requests
 import typing
 
 #
@@ -43,7 +43,7 @@ def __init__(self, storage, collection, obj_id, version=None):
 		self.ModPush = {}
 		self.ModPull = {}
 
-		self.WebhookResponseData = None
+		self.WebhookResponseData = {}
 
 
 	def get_id_name(self):
@@ -117,14 +117,14 @@ async def execute(self, custom_data: typing.Optional[dict] = None):
 			```python
 			upsertor = storage_service.upsertor("users")
 			upsertor.set("name", "Raccoon")
-			await upsertor.execute(custom_data={"action": "user_creation"})
+			await upsertor.execute(custom_data={"event_type": "create_user"})
 			```
 
 			will trigger a webhook whose payload may look like this:
 			```json
 			{
 				"collection": "users",
-				"custom": {"action": "user_creation"},
+				"custom": {"event_type": "create_user"},
 				"upsertor": {
 					"id": "2O-h3ulpO-ZwDrkSbQlYB3pYS0JJxCJj3nr6uQAu8aU",
 					"id_field_name": "_id",
@@ -143,21 +143,31 @@ async def execute(self, custom_data: typing.Optional[dict] = None):
 		pass
 
 
-	async def _webhook(self, data: dict):
-		assert self.Storage.WebhookURI is not None
+	async def webhook(self, data: dict):
+		assert self.Storage.WebhookURIs is not None
 		json_dump = asab.web.rest.json.JSONDumper(pretty=False)(data)
+		for uri in self.Storage.WebhookURIs:
+			self.WebhookResponseData[uri] = await self.Storage.ProactorService.execute(
+				self._webhook, json_dump, uri, self.Storage.WebhookAuth)
+
+
+
+	def _webhook(self, data, uri, auth=None):
 		try:
-			async with aiohttp.ClientSession(auth=self.Storage.WebhookAuth) as session:
-				async with session.put(
-					self.Storage.WebhookURI,
-					data=json_dump,
+			with requests.Session() as session:
+				if self.Storage.WebhookAuth:
+					session.headers["Authorization"] = self.Storage.WebhookAuth
+				with session.put(
+					uri,
+					data=data,
 					headers={"Content-Type": "application/json"}
 				) as response:
-					if response.status // 100 != 2:
-						text = await response.text()
-						L.error("Webhook endpoint responded with {}:\n{}".format(response.status, text))
-						return
-					self.WebhookResponseData = await response.json()
+					if response.status_code // 100 != 2:
+						text = response.text
+						L.error(
+							"Webhook endpoint responded with {}:\n{}".format(response.status_code, text),
+							struct_data={"uri": uri})
+					return response.json()
 		except json.decoder.JSONDecodeError as e:
 			L.error("Failed to decode JSON response from webhook: {}".format(str(e)))
 		except Exception as e: