diff --git a/core/package.json b/core/package.json
index 53deb6b475eea1b062a1091ea5a4e4f281f75319..d25cfbc6b52d2ecba07a3bc681ade51b36b85f0e 100644
--- a/core/package.json
+++ b/core/package.json
@@ -64,7 +64,6 @@
     "@popperjs/core": "2.11.x",
     "babel-plugin-add-header-comment": "^1.0.3",
     "backbone": "1.4.x",
-    "chalk": "^4.1.0",
     "chokidar": "^3.3.1",
     "chromedriver": "^98.0.1",
     "ckeditor5": "34.1.x",
diff --git a/core/scripts/css/check.js b/core/scripts/css/check.js
index 8eefa7e4f87f2ad3ad0019d9979a7eaecd1efa74..7ed236573c617a3a7e404aba51807a9e7ff62ceb 100644
--- a/core/scripts/css/check.js
+++ b/core/scripts/css/check.js
@@ -1,4 +1,3 @@
-const chalk = require('chalk');
 const fs = require('fs');
 const log = require('./log');
 const compile = require('./compile');
@@ -10,12 +9,12 @@ module.exports = (filePath) => {
     const fileName = filePath.slice(0, -9);
     fs.readFile(`${fileName}.css`, function read(err, data) {
       if (err) {
-        log(chalk.red(err));
+        log(err);
         process.exitCode = 1;
         return;
       }
       if (code !== data.toString()) {
-        log(chalk.red(`'${filePath}' is not updated.`));
+        log(`'${filePath}' is not updated.`);
         process.exitCode = 1;
       }
     });
diff --git a/core/scripts/css/compile.js b/core/scripts/css/compile.js
index 810e3ea38b8aa719e0013181270d553e4d9c0966..5be0c8337322e75da4f2a339b95270c6ef6eb67b 100644
--- a/core/scripts/css/compile.js
+++ b/core/scripts/css/compile.js
@@ -1,4 +1,3 @@
-const chalk = require('chalk');
 const log = require('./log');
 const fs = require('fs');
 const postcss = require('postcss');
@@ -81,7 +80,7 @@ module.exports = (filePath, callback) => {
       callback(result.css);
     })
     .catch(error => {
-      log(chalk.red(error));
+      log(error);
       process.exitCode = 1;
     });
   });
diff --git a/core/scripts/js/check.js b/core/scripts/js/check.js
index 8769d64e94c7affce4786a7749c698141a690a98..83196773e503fff692b878fa36e1902086e075d4 100644
--- a/core/scripts/js/check.js
+++ b/core/scripts/js/check.js
@@ -1,4 +1,3 @@
-const chalk = require('chalk');
 const fs = require('fs');
 const log = require('./log');
 const compile = require('./compile');
@@ -10,12 +9,12 @@ module.exports = (filePath) => {
     const fileName = filePath.slice(0, -7);
     fs.readFile(`${fileName}.js`, function read(err, data) {
       if (err) {
-        log(chalk.red(err));
+        log(err);
         process.exitCode = 1;
         return;
       }
       if (code !== data.toString()) {
-        log(chalk.red(`'${filePath}' is not updated.`));
+        log(`'${filePath}' is not updated.`);
         process.exitCode = 1;
       }
     });
diff --git a/core/scripts/js/compile.js b/core/scripts/js/compile.js
index d644f55cbd4ed6dfa7d65e0a7d1e48e005eaf07f..326c191b0c926c61d220cbbe5abdaebfd74135ab 100644
--- a/core/scripts/js/compile.js
+++ b/core/scripts/js/compile.js
@@ -1,4 +1,3 @@
-const chalk = require('chalk');
 const log = require('./log');
 const babel = require('@babel/core');
 
@@ -20,7 +19,7 @@ module.exports = (filePath, callback) => {
     },
     (err, result) => {
       if (err) {
-        log(chalk.red(err));
+        log(err);
         process.exitCode = 1;
       }
       else {