diff --git a/src/wrapper/cli.test.ts b/src/wrapper/cli.test.ts
index 048c495..bd69bd1 100644
--- a/src/wrapper/cli.test.ts
+++ b/src/wrapper/cli.test.ts
@@ -6,7 +6,11 @@ import { tmpdir } from "node:os";
 import { dirname, join } from "node:path";
 import { fileURLToPath } from "node:url";
 
-function waitForExit(child: ReturnType<typeof spawn>, timeoutMs = 1500): Promise<number> {
+// Tests spawn a wrapper subprocess and rely on the wrapper to exit quickly.
+// When the full test suite runs with concurrency the host can be CPU-constrained
+// and subprocess startup/teardown can be delayed. Keep this timeout relaxed
+// to avoid flakiness while preserving the test's intent.
+function waitForExit(child: ReturnType<typeof spawn>, timeoutMs = 8000): Promise<number> {
   return new Promise((resolve, reject) => {
     const timeout = setTimeout(() => {
       child.kill("SIGKILL");
@@ -237,7 +241,7 @@ test("wrapper does not exit early on non-terminal toolUse assistant messages", a
     stdio: ["ignore", "pipe", "pipe"],
   });
 
-  const exitCode = await waitForExit(child, 2500);
+  const exitCode = await waitForExit(child, 8000);
   assert.equal(exitCode, 0);
 
   const result = JSON.parse(await readFile(resultPath, "utf8"));
@@ -301,7 +305,7 @@ test("wrapper skips blank assistant transcript lines before later tool activity"
     stdio: ["ignore", "pipe", "pipe"],
   });
 
-  const exitCode = await waitForExit(child, 2500);
+  const exitCode = await waitForExit(child, 8000);
   assert.equal(exitCode, 0);
 
   const transcript = await readFile(transcriptPath, "utf8");