diff --git a/plugins/codex/scripts/stop-review-gate-hook.mjs b/plugins/codex/scripts/stop-review-gate-hook.mjs
index 2346bdcf4..bab91a59a 100644
--- a/plugins/codex/scripts/stop-review-gate-hook.mjs
+++ b/plugins/codex/scripts/stop-review-gate-hook.mjs
@@ -13,7 +13,7 @@ import { sortJobsNewestFirst } from "./lib/job-control.mjs";
 import { SESSION_ID_ENV } from "./lib/tracked-jobs.mjs";
 import { resolveWorkspaceRoot } from "./lib/workspace.mjs";
 
-const STOP_REVIEW_TIMEOUT_MS = 15 * 60 * 1000;
+const STOP_REVIEW_TIMEOUT_MS = 14 * 60 * 1000;
 const SCRIPT_DIR = path.dirname(fileURLToPath(import.meta.url));
 const ROOT_DIR = path.resolve(SCRIPT_DIR, "..");
 const STOP_REVIEW_TASK_MARKER = "Run a stop-gate review of the previous Claude turn.";
@@ -113,7 +113,7 @@ function runStopReview(cwd, input = {}) {
     return {
       ok: false,
       reason:
-        "The stop-time Codex review task timed out after 15 minutes. Run /codex:review --wait manually or bypass the gate."
+        "The stop-time Codex review task timed out after 14 minutes. Run /codex:review --wait manually or bypass the gate."
     };
   }
 
diff --git a/tests/commands.test.mjs b/tests/commands.test.mjs
index c34b06059..11797760d 100644
--- a/tests/commands.test.mjs
+++ b/tests/commands.test.mjs
@@ -210,6 +210,27 @@ test("hooks keep session-end cleanup and stop gating enabled", () => {
   assert.match(source, /session-lifecycle-hook\.mjs/);
 });
 
+test("stop-review task timeout leaves headroom under the Stop hook timeout", () => {
+  const hookSource = read("scripts/stop-review-gate-hook.mjs");
+  const hooks = JSON.parse(read("hooks/hooks.json"));
+  const stopHook = hooks.hooks.Stop.flatMap((entry) => entry.hooks).find((hook) =>
+    String(hook.command ?? "").includes("stop-review-gate-hook.mjs")
+  );
+  const hookTimeoutMs = Number(stopHook?.timeout) * 1000;
+  const timeoutMatch = hookSource.match(/const STOP_REVIEW_TIMEOUT_MS = ([^;]+);/);
+  assert.ok(timeoutMatch, "STOP_REVIEW_TIMEOUT_MS should be declared");
+  assert.match(timeoutMatch[1], /^[\d\s.*+\-/()]+$/);
+  const innerTimeoutMs = new Function(`return (${timeoutMatch[1]});`)();
+  const timeoutMessageMatch = hookSource.match(/timed out after ([0-9]+) minutes/);
+
+  assert.equal(Number.isFinite(hookTimeoutMs), true);
+  assert.equal(hookTimeoutMs, 900000);
+  assert.equal(Number.isFinite(innerTimeoutMs), true);
+  assert.equal(innerTimeoutMs < hookTimeoutMs, true);
+  assert.equal(hookTimeoutMs - innerTimeoutMs >= 30000, true);
+  assert.equal(Number(timeoutMessageMatch?.[1]) * 60 * 1000, innerTimeoutMs);
+});
+
 test("setup command can offer Codex install and still points users to codex login", () => {
   const setup = read("commands/setup.md");
   const readme = fs.readFileSync(path.join(ROOT, "README.md"), "utf8");