diff --git a/.gitignore b/.gitignore
index 360bf9d..7147a90 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,4 @@ node_modules
 output*
 *.tsv
 *.zip
-/japanese.js
+/japanese-util.js
diff --git a/README.md b/README.md
index 412f7b0..2ad8f57 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ The generated dictionary file does not contain part-of-speech information, as Yo
 ### Prerequisites
 
 This script uses a component from [Yomichan](https://github.com/FooSoft/yomichan)'s implementation,
-specifically the `JapaneseUtil` class from [japanese.js](https://github.com/FooSoft/yomichan/blob/master/ext/mixed/js/japanese.js).
+specifically the `JapaneseUtil` class from [japanese-util.js](https://github.com/FooSoft/yomichan/blob/master/ext/js/language/japanese-util.js).
 
 This file must be manually copied into the same directory as main.js in order for the script to work.
 
diff --git a/main.js b/main.js
index f9ec6df..437e5ff 100644
--- a/main.js
+++ b/main.js
@@ -6,7 +6,7 @@ function evalFile(fileName, returnValue) {
     return (new Function(`${japaneseSource};return ${returnValue};`))();
 }
 
-const JapaneseUtil = evalFile('./japanese.js', 'JapaneseUtil');
+const JapaneseUtil = evalFile('./japanese-util.js', 'JapaneseUtil');
 const jp = new JapaneseUtil(null);
 
 function convertReadingToHiragana(reading, expression) {