diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5f25df8..f9336bc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,13 @@
+<a name="0.0.10"></a>
+## [0.0.10](https://github.com/kwonoj/cld3-asm/compare/v0.0.9...v0.0.10) (2017-10-19)
+
+
+### Features
+
+* **index:** export constant for und ([65fb78d](https://github.com/kwonoj/cld3-asm/commit/65fb78d))
+
+
+
 <a name="0.0.9"></a>
 ## [0.0.9](https://github.com/kwonoj/cld3-asm/compare/v0.0.8...v0.0.9) (2017-10-10)
 
diff --git a/package.json b/package.json
index ba512c5..a2aba4e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cld3-asm",
-  "version": "0.0.9",
+  "version": "0.0.10",
   "description": "WebAssembly based Javascript bindings for google compact language detector 3",
   "main": "./dist/src/index.js",
   "types": "./dist/src/index.d.ts",
diff --git a/src/index.ts b/src/index.ts
index 2df01d0..49acba7 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -2,4 +2,4 @@ export { loadModule } from './loadModule';
 export { log, enableLogger } from './util/logger';
 export { ENVIRONMENT } from 'emscripten-wasm-loader';
 export { LanguageIdentifier, CldFactory } from './cldFactory';
-export { LanguageResult } from './cldAsmModule';
+export { LanguageResult, UnknownLanguage } from './cldAsmModule';