diff --git a/ai/slackbot-mcp-client/no-auth/requirements.txt b/ai/slackbot-mcp-client/no-auth/requirements.txt
index 29c0036..159caef 100644
--- a/ai/slackbot-mcp-client/no-auth/requirements.txt
+++ b/ai/slackbot-mcp-client/no-auth/requirements.txt
@@ -5,6 +5,6 @@ pytest==9.1.1
 ruff==0.15.20
 slack_bolt==1.28.0
 slack_cli_hooks==0.3.0
-slack_sdk==3.42.0
+slack_sdk==3.43.0
 starlette==1.3.1
 uvicorn==0.49.0