diff --git a/README.md b/README.md
index 9d1bd41..4b2aa02 100644
--- a/README.md
+++ b/README.md
@@ -154,9 +154,9 @@ The dev server forwards the browser's model request through `POST /__mathscrap/a
 
 ## Packages
 
-外壳是 Tauri 2。它把 `dist/` 放进系统 WebView。安装之后不连接 Vite，也不从公共 CDN 拉数学库或 OCR。标识是 `app.mathscrap`，版本 `0.1.0`。图标用纸面的牛皮色 `#c9a473`。
+外壳是 Tauri 2。它把 `dist/` 放进系统 WebView。安装之后不连接 Vite，也不从公共 CDN 拉数学库或 OCR。标识是 `app.mathscrap`，版本 `0.0.1`。图标用纸面的牛皮色 `#c9a473`。
 
-The shell is Tauri 2. It puts `dist/` in the system WebView. After install it does not connect to Vite and does not fetch the math library or OCR from a public CDN. The identifier is `app.mathscrap`, version `0.1.0`. The icon uses the kraft color `#c9a473`.
+The shell is Tauri 2. It puts `dist/` in the system WebView. After install it does not connect to Vite and does not fetch the math library or OCR from a public CDN. The identifier is `app.mathscrap`, version `0.0.1`. The icon uses the kraft color `#c9a473`.
 
 | 命令 Command | 在哪里跑 / Where it runs | 得到什么 / What you get |
 | --- | --- | --- |
diff --git a/crates/mathcore/Cargo.lock b/crates/mathcore/Cargo.lock
index 0551bf7..b5c531b 100644
--- a/crates/mathcore/Cargo.lock
+++ b/crates/mathcore/Cargo.lock
@@ -22,7 +22,7 @@ checksum = "8f42a60cbdf9a97f5d2305f08a87dc4e09308d1276d28c869c684d7777685682"
 
 [[package]]
 name = "mathcore"
-version = "0.1.0"
+version = "0.0.1"
 dependencies = [
  "serde",
  "serde_json",
diff --git a/crates/mathcore/Cargo.toml b/crates/mathcore/Cargo.toml
index 7c42917..019dbde 100644
--- a/crates/mathcore/Cargo.toml
+++ b/crates/mathcore/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "mathcore"
-version = "0.1.0"
+version = "0.0.1"
 edition = "2021"
 description = "Fast math helpers (parse, sample, solve, geometry inference) for the MathScrap kraft notebook, compiled to WASM."
 license = "MIT"
diff --git a/mcp/server.ts b/mcp/server.ts
index 56a3115..e38abb4 100644
--- a/mcp/server.ts
+++ b/mcp/server.ts
@@ -35,7 +35,7 @@ async function bridgeCall(name: string, args: Record<string, unknown>) {
   return data.result
 }
 
-const server = new Server({ name: 'mathscrap', version: '0.1.0' }, { capabilities: { tools: {} } })
+const server = new Server({ name: 'mathscrap', version: '0.0.1' }, { capabilities: { tools: {} } })
 
 server.setRequestHandler(ListToolsRequestSchema, async () => ({
   tools: TOOL_SPECS.map((tool) => ({
diff --git a/package-lock.json b/package-lock.json
index f555e0d..396d1ca 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "mathscrap",
-  "version": "0.1.0",
+  "version": "0.0.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "mathscrap",
-      "version": "0.1.0",
+      "version": "0.0.1",
       "license": "Apache-2.0",
       "dependencies": {
         "@base-ui/react": "^1.9.0",
diff --git a/package.json b/package.json
index 605bcce..9209e7a 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "mathscrap",
   "private": true,
-  "version": "0.1.0",
+  "version": "0.0.1",
   "type": "module",
   "scripts": {
     "dev": "vite",
diff --git a/src-tauri/Cargo.lock b/src-tauri/Cargo.lock
index 2b5e863..9fc9023 100644
--- a/src-tauri/Cargo.lock
+++ b/src-tauri/Cargo.lock
@@ -1732,7 +1732,7 @@ dependencies = [
 
 [[package]]
 name = "mathscrap"
-version = "0.1.0"
+version = "0.0.1"
 dependencies = [
  "serde",
  "serde_json",
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index 389b24c..e236373 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "mathscrap"
-version = "0.1.0"
+version = "0.0.1"
 description = "Kraft-paper math scrapbook: Freeform-like sheet, shared plot, geometry inference (Rust/WASM)."
 authors = ["DNTOF"]
 license = "Apache-2.0"
diff --git a/src-tauri/tauri.conf.json b/src-tauri/tauri.conf.json
index 38c04e4..595e482 100644
--- a/src-tauri/tauri.conf.json
+++ b/src-tauri/tauri.conf.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://schema.tauri.app/config/2",
   "productName": "MathScrap",
-  "version": "0.1.0",
+  "version": "0.0.1",
   "identifier": "app.mathscrap",
   "build": {
     "beforeDevCommand": "npm run dev",
diff --git a/src/version.ts b/src/version.ts
index 1bff0e6..c63a6e5 100644
--- a/src/version.ts
+++ b/src/version.ts
@@ -1,3 +1,3 @@
 /** Installed-app metadata. Keep in step with package.json and src-tauri/tauri.conf.json. */
 export const APP_NAME = 'MathScrap'
-export const APP_VERSION = '0.1.0'
+export const APP_VERSION = '0.0.1'
diff --git a/src/wasm/pkg/package.json b/src/wasm/pkg/package.json
index 9c759e6..15e56e7 100644
--- a/src/wasm/pkg/package.json
+++ b/src/wasm/pkg/package.json
@@ -2,7 +2,7 @@
   "name": "mathcore",
   "type": "module",
   "description": "Fast math helpers (parse, sample, solve, geometry inference) for the MathScrap kraft notebook, compiled to WASM.",
-  "version": "0.1.0",
+  "version": "0.0.1",
   "license": "MIT",
   "files": [
     "mathcore_bg.wasm",