diff --git a/crawler/notifications.py b/crawler/notifications.py
index a5eb656..735fd7e 100644
--- a/crawler/notifications.py
+++ b/crawler/notifications.py
@@ -2,16 +2,17 @@ from abc import abstractmethod
 from enum import StrEnum
 import apprise
 from functools import lru_cache
+import os
 
 
 class Surface:
     @abstractmethod
-    def connection_string(self) -> str | None:
-        ...
+    def connection_string(self) -> str | None: ...
+
 
 class Slack(Surface):
     def connection_string(self) -> str | None:
-        return "https://hooks.slack.com/services/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"
+        return os.environ.get("SLACK_WEBHOOK_URL")
 
 
 @lru_cache(maxsize=None)
@@ -19,9 +20,11 @@ def get_notifier(surfaces: list[Surface] | None = None) -> apprise.Apprise:
     surfaces = surfaces or [Slack()]
     obj = apprise.Apprise()
     for surface in surfaces:
-        obj.add(surface.connection_string())
+        if conn := surface.connection_string():
+            obj.add(conn)
     return obj
 
-async def send_notification( body: str, title: str='') -> bool:
+
+async def send_notification(body: str, title: str = "") -> bool:
     notifier = get_notifier()
     return await notifier.async_notify(body=body, title=title)