diff --git a/src/App.jsx b/src/App.jsx
index 4a9fe4f..e3a043d 100644
--- a/src/App.jsx
+++ b/src/App.jsx
@@ -1,7 +1,7 @@
 import React, {Component} from 'react';
 
 import './App.scss';
-import {declineSaimiar} from './saimiar_morphology.js';
+import {declineSaimiar} from './saimiar_morphology.ts';
 
 const backendUrl = 'https://kucinakobackend.ichigo.everydayimshuflin.com';
 
diff --git a/src/saimiar_morphology.js b/src/saimiar_morphology.ts
similarity index 100%
rename from src/saimiar_morphology.js
rename to src/saimiar_morphology.ts