diff --git a/02-use-cases/A2A-multi-agent-incident-response/host_adk_agent/requirements.txt b/02-use-cases/A2A-multi-agent-incident-response/host_adk_agent/requirements.txt
index 0e6eabf71..d3ed9187f 100644
--- a/02-use-cases/A2A-multi-agent-incident-response/host_adk_agent/requirements.txt
+++ b/02-use-cases/A2A-multi-agent-incident-response/host_adk_agent/requirements.txt
@@ -30,7 +30,7 @@ attrs==25.4.0
     #   aiohttp
     #   jsonschema
     #   referencing
-authlib==1.6.5
+authlib==1.6.12
     # via google-adk
 bedrock-agentcore==1.0.0
     # via host-adk (pyproject.toml)