diff --git a/examples/services/monitoring/slack_alerts.py b/examples/services/monitoring/slack_alerts.py
index 471b0fe8..731a0744 100644
--- a/examples/services/monitoring/slack_alerts.py
+++ b/examples/services/monitoring/slack_alerts.py
@@ -69,7 +69,7 @@ class SlackMonitor(Monitor):
         self.slack_client.api_test()
 
         # Find channel ID
-        response = self.slack_client.conversations_list()
+        response = self.slack_client.conversations_list(limit=1000)
         channel_id = [channel_info.get('id') for channel_info in response.data['channels']
                       if channel_info.get('name') == self.channel]
         if not channel_id: