diff --git a/actions/setup/js/smoke_copilot_sub_agents.test.cjs b/actions/setup/js/smoke_copilot_sub_agents.test.cjs
index 18f9bd8e485..ab2e16967ae 100644
--- a/actions/setup/js/smoke_copilot_sub_agents.test.cjs
+++ b/actions/setup/js/smoke_copilot_sub_agents.test.cjs
@@ -14,7 +14,7 @@ function evidence() {
   const agents = [
     ["haiku-whoami", "copilot-completions/claude-haiku-4.5", "/chat/completions"],
     ["mini-whoami", "copilot-responses/gpt-5-mini", "/responses"],
-    ["nano-whoami", "copilot-responses/gpt-5-nano", "/responses"],
+    ["mini54-whoami", "copilot-responses/gpt-5.4-mini", "/responses"],
   ];
   return {
     events: agents.flatMap(([agentName, model]) => [