diff --git a/ai/slackbot-mcp-client/no-auth/requirements.txt b/ai/slackbot-mcp-client/no-auth/requirements.txt
index 4dec982..8c720f1 100644
--- a/ai/slackbot-mcp-client/no-auth/requirements.txt
+++ b/ai/slackbot-mcp-client/no-auth/requirements.txt
@@ -1,6 +1,6 @@
 httpx2==2.6.0
 mcp==1.28.1
-mypy==2.2.0
+mypy==2.3.0
 pytest==9.1.1
 ruff==0.15.21
 slack_bolt==1.29.0