diff --git a/src/cli/daemon-cli/restart-health.test.ts b/src/cli/daemon-cli/restart-health.test.ts
index e6f4ba745c0..23a2dcb5c6e 100644
--- a/src/cli/daemon-cli/restart-health.test.ts
+++ b/src/cli/daemon-cli/restart-health.test.ts
@@ -55,7 +55,7 @@ function makeGatewayService(
 }
 
 function firstCallArg(mock: { mock: { calls: unknown[][] } }): unknown {
-  const call = mock.mock.calls[0];
+  const call = mock.mock.calls.at(0);
   if (!call) {
     throw new Error("Expected first mock call");
   }