diff --git a/zulip/integrations/bridge_with_slack/requirements.txt b/zulip/integrations/bridge_with_slack/requirements.txt
index fba63b9..2e389fa 100644
--- a/zulip/integrations/bridge_with_slack/requirements.txt
+++ b/zulip/integrations/bridge_with_slack/requirements.txt
@@ -1 +1,2 @@
 slack-sdk==3.5.1
+aiohttp