diff --git a/scripts/g14-gitops-render.mjs b/scripts/g14-gitops-render.mjs
index 2008c0a2..1bae54e9 100644
--- a/scripts/g14-gitops-render.mjs
+++ b/scripts/g14-gitops-render.mjs
@@ -2,7 +2,7 @@
 import assert from "node:assert/strict";
 import { execFile } from "node:child_process";
 import { createHash } from "node:crypto";
-import { mkdir, readFile, writeFile } from "node:fs/promises";
+import { mkdir, readFile, rm, writeFile } from "node:fs/promises";
 import path from "node:path";
 import { promisify } from "node:util";
 import { fileURLToPath } from "node:url";
@@ -3314,6 +3314,13 @@ async function writeFiles(files) {
   }
 }
 
+async function cleanStaleGeneratedOutput(args) {
+  if (args.lane !== "v02") return;
+  for (const relativePath of ["runtime-v02", "tekton-v02"]) {
+    await rm(generatedPath(path.join(args.outDir, relativePath)), { recursive: true, force: true });
+  }
+}
+
 async function checkFiles(files) {
   const mismatches = [];
   for (const [filePath, expected] of files) {
@@ -3342,7 +3349,10 @@ async function main() {
     process.exitCode = mismatches.length === 0 ? 0 : 1;
     return;
   }
-  if (args.write) await writeFiles(files);
+  if (args.write) {
+    await cleanStaleGeneratedOutput(args);
+    await writeFiles(files);
+  }
   console.log(JSON.stringify({ ok: true, sourceCommit: source.full, sourceShort: source.short, outDir: args.outDir, files: [...files.keys()] }, null, 2));
 }
 
diff --git a/scripts/g14-gitops-render.test.ts b/scripts/g14-gitops-render.test.ts
index d59688c2..795490f8 100644
--- a/scripts/g14-gitops-render.test.ts
+++ b/scripts/g14-gitops-render.test.ts
@@ -1,6 +1,6 @@
 import assert from "node:assert/strict";
 import { spawnSync } from "node:child_process";
-import { mkdtemp, readFile, rm } from "node:fs/promises";
+import { mkdir, mkdtemp, readFile, rm, writeFile } from "node:fs/promises";
 import os from "node:os";
 import path from "node:path";
 import test from "node:test";
@@ -18,6 +18,13 @@ test("v02 render follows TypeScript runtime checks and does not self-patch boots
     assert.equal(head.status, 0, head.stderr || head.stdout);
     const sourceRevision = head.stdout.trim();
 
+    const staleRuntimeFile = path.join(outDir, "runtime-v02", "stale-gateway-simu.yaml");
+    const staleTektonFile = path.join(outDir, "tekton-v02", "stale-router.yaml");
+    await mkdir(path.dirname(staleRuntimeFile), { recursive: true });
+    await mkdir(path.dirname(staleTektonFile), { recursive: true });
+    await writeFile(staleRuntimeFile, "kind: Service\nmetadata:\n  name: hwlab-gateway-simu\n");
+    await writeFile(staleTektonFile, "hwlab-router\n");
+
     const render = spawnSync(process.execPath, [
       "scripts/g14-gitops-render.mjs",
       "--lane", "v02",
@@ -29,6 +36,8 @@ test("v02 render follows TypeScript runtime checks and does not self-patch boots
       "--source-revision", "HEAD"
     ], { cwd: process.cwd(), encoding: "utf8" });
     assert.equal(render.status, 0, render.stderr || render.stdout);
+    await assert.rejects(() => readFile(staleRuntimeFile, "utf8"), { code: "ENOENT" });
+    await assert.rejects(() => readFile(staleTektonFile, "utf8"), { code: "ENOENT" });
 
     const pipeline = await readFile(path.join(outDir, "tekton-v02", "pipeline.yaml"), "utf8");
     const pipelineJson = JSON.parse(pipeline);