diff --git a/.zdp/plugin.json b/.zdp/plugin.json
index f5404be..70ecc02 100644
--- a/.zdp/plugin.json
+++ b/.zdp/plugin.json
@@ -2,7 +2,7 @@
   "apiVersion": 1,
   "id": "scheduler",
   "name": "Scheduler",
-  "version": "0.1.6",
+  "version": "0.1.7",
   "description": "Create normal ZCode tasks from timezone-aware cron schedules while ZCode is open.",
   "entrypoints": {
     "main": "dist/main.cjs",
@@ -10,7 +10,7 @@
   },
   "engines": {
     "host": ">=0.3.5 <1",
-    "zcode": ">=3.3.6"
+    "zcode": ">=3.3.6 <3.5.2"
   },
   "capabilities": [
     "zcode.workspaces.read",
diff --git a/README.md b/README.md
index c5d511d..7142ba8 100644
--- a/README.md
+++ b/README.md
@@ -2,19 +2,22 @@
 
 Scheduler is an extension for [ZCode Desktop Extensions](https://github.com/notmike101/zcode-extensions). It creates timezone-aware recurring ZCode tasks while the desktop app is open.
 
+> [!IMPORTANT]
+> Scheduler is retired on ZCode 3.5.2 and newer because ZCode now provides native automation and scheduling. The extension remains available only for older compatible ZCode releases.
+
 Scheduled runs are ordinary persistent ZCode tasks. They appear immediately in the normal sidebar as `⏰ Job name`, can be opened while they run, remain available after completion, and archive like any other task.
 
 ## Requirements
 
 - ZCode Desktop Extensions 0.2.0 or newer
-- ZCode 3.3.6 or newer
+- ZCode 3.3.6 through 3.5.1
 - Windows
 
 ## Install
 
 Open **Extensions → Available** in ZCode and install Scheduler. The host verifies the release archive checksum before staging it. New installs and updates take effect on the next ZCode launch.
 
-Manual installation is also supported: download `zcode-scheduler-v0.1.6.zip` from the [latest release](https://github.com/notmike101/zcode-scheduler/releases/latest), extract the `scheduler` folder, and select it from **Extensions → Installed → Install folder**. Scheduler 0.1.6 requires host 0.3.5 or newer.
+On compatible ZCode versions, manual installation is also supported: download `zcode-scheduler-v0.1.7.zip` from the [latest release](https://github.com/notmike101/zcode-scheduler/releases/latest), extract the `scheduler` folder, and select it from **Extensions → Installed → Install folder**. Scheduler 0.1.7 requires host 0.3.5 or newer.
 
 ## Scheduling behavior
 
@@ -30,7 +33,7 @@ Manual installation is also supported: download `zcode-scheduler-v0.1.6.zip` fro
 ```powershell
 bun install
 bun run check
-bun run release:package -- --tag v0.1.6
+bun run release:package -- --tag v0.1.7
 ```
 
 The release command writes a ZIP, its SHA-256 checksum, and `extension-update.json` to `dist/release`.
diff --git a/package.json b/package.json
index 638941b..a38fd79 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "zcode-scheduler",
-  "version": "0.1.6",
+  "version": "0.1.7",
   "description": "Schedule normal, visible ZCode tasks with timezone-aware cron expressions.",
   "private": true,
   "license": "MIT",
diff --git a/tests/release.test.ts b/tests/release.test.ts
index bc5b08f..c5fc7c2 100644
--- a/tests/release.test.ts
+++ b/tests/release.test.ts
@@ -26,6 +26,7 @@ describe("release metadata", () => {
   test("uses explicit capabilities and only the vNext renderer lifecycle", () => {
     const manifest = JSON.parse(readFileSync(path.join(import.meta.dir, "..", ".zdp", "plugin.json"), "utf8"));
     expect(manifest.engines.host).toBe(">=0.3.5 <1");
+    expect(manifest.engines.zcode).toBe(">=3.3.6 <3.5.2");
     expect(manifest.capabilities).toEqual([
       "zcode.workspaces.read",
       "zcode.tasks.run",