diff --git a/.gitignore b/.gitignore
index 7c3b17f0..6452090c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@
 /.vscode
 /coverage
 /temp
+/src/pkg.ts
 /src/parser/parser.js
 /src/parser/parser.mjs
 npm-debug.log
diff --git a/etc/aiscript.api.md b/etc/aiscript.api.md
index c430eb08..bcdd0042 100644
--- a/etc/aiscript.api.md
+++ b/etc/aiscript.api.md
@@ -22,6 +22,9 @@ type AddAssign_2 = NodeBase_2 & {
     expr: Expression_2;
 };
 
+// @public (undocumented)
+export const AISCRIPT_VERSION: "0.17.0";
+
 // @public (undocumented)
 abstract class AiScriptError extends Error {
     constructor(message: string, info?: any);
diff --git a/package.json b/package.json
index 8f4965ed..1e0c0422 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
 		"ts": "npm run ts-esm && npm run ts-dts",
 		"ts-esm": "tsc --outDir built/esm",
 		"ts-dts": "tsc --outDir built/dts --declaration true --emitDeclarationOnly true --declarationMap true",
-		"build": "npm run peg && npm run ts",
+		"build": "node scripts/gen-pkg-ts.mjs && npm run peg && npm run ts",
 		"build-debug": "npm run peg-debug && tsc",
 		"api": "npx api-extractor run --local --verbose",
 		"api-prod": "npx api-extractor run --verbose",
diff --git a/playground/src/App.vue b/playground/src/App.vue
index f1d3df1f..cfbe6b5e 100644
--- a/playground/src/App.vue
+++ b/playground/src/App.vue
@@ -1,6 +1,6 @@
 <template>
 <div id="root">
-	<h1>AiScript (v{{ std['Core:v'].value }}) Playground</h1>
+	<h1>AiScript (v{{ AISCRIPT_VERSION }}) Playground</h1>
 	<div id="grid1">
 		<div id="editor" class="container">
 			<header>Input<div class="actions"><button @click="setCode">FizzBuzz</button></div></header>
@@ -42,7 +42,7 @@
 
 <script setup>
 import { ref, watch } from 'vue';
-import { Interpreter, Parser, utils } from '@syuilo/aiscript';
+import { AISCRIPT_VERSION, Interpreter, Parser, utils } from '@syuilo/aiscript';
 import { std } from '@syuilo/aiscript/interpreter/lib/std';
 
 import { PrismEditor } from 'vue-prism-editor';
diff --git a/scripts/gen-pkg-ts.mjs b/scripts/gen-pkg-ts.mjs
new file mode 100644
index 00000000..f6d757a3
--- /dev/null
+++ b/scripts/gen-pkg-ts.mjs
@@ -0,0 +1,15 @@
+import { writeFile } from 'node:fs/promises';
+import pkg from '../package.json' assert { type: 'json' };
+
+await writeFile('./src/pkg.ts',
+`/*
+	This file is automatically generated by scripts/gen-pkg-ts.js.
+	DO NOT edit this file. To change it's behavior, edit scripts/gen-pkg-ts.js instead.
+*/
+/* eslint-disable quotes */
+/* eslint-disable comma-dangle */
+export const pkg = ${ JSON.stringify({
+	version: pkg.version,
+}, undefined, '\t')} as const;
+`
+);
diff --git a/src/constants.ts b/src/constants.ts
new file mode 100644
index 00000000..12c23baf
--- /dev/null
+++ b/src/constants.ts
@@ -0,0 +1,2 @@
+import { pkg } from './pkg.js';
+export const AISCRIPT_VERSION = pkg.version;
diff --git a/src/index.ts b/src/index.ts
index a0811739..a2420552 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -10,6 +10,7 @@ import { Parser, ParserPlugin, PluginType } from './parser/index.js';
 import * as Cst from './parser/node.js';
 import * as errors from './error.js';
 import * as Ast from './node.js';
+import { AISCRIPT_VERSION } from './constants.js';
 export { Interpreter };
 export { Scope };
 export { utils };
@@ -20,3 +21,4 @@ export { PluginType };
 export { Cst };
 export { errors };
 export { Ast };
+export { AISCRIPT_VERSION };
diff --git a/src/interpreter/lib/std.ts b/src/interpreter/lib/std.ts
index e9402f89..b5d53d29 100644
--- a/src/interpreter/lib/std.ts
+++ b/src/interpreter/lib/std.ts
@@ -4,6 +4,7 @@ import seedrandom from 'seedrandom';
 import { NUM, STR, FN_NATIVE, FALSE, TRUE, ARR, NULL, BOOL, OBJ, ERROR } from '../value.js';
 import { assertNumber, assertString, assertBoolean, valToJs, jsToVal, assertFunction, assertObject, eq, expectAny, assertArray, reprValue } from '../util.js';
 import { AiScriptRuntimeError } from '../../error.js';
+import { AISCRIPT_VERSION } from '../../constants.js';
 import { textDecoder } from '../../const.js';
 import type { Value } from '../value.js';
 
@@ -11,7 +12,7 @@ export const std: Record<string, Value> = {
 	'help': STR('SEE: https://github.com/syuilo/aiscript/blob/master/docs/get-started.md'),
 
 	//#region Core
-	'Core:v': STR('0.16.0'), // TODO: package.jsonを参照
+	'Core:v': STR(AISCRIPT_VERSION),
 
 	'Core:ai': STR('kawaii'),