diff --git a/.changeset/twenty-tables-rhyme.md b/.changeset/twenty-tables-rhyme.md
new file mode 100644
index 0000000..96e9dce
--- /dev/null
+++ b/.changeset/twenty-tables-rhyme.md
@@ -0,0 +1,5 @@
+---
+"@sopt-makers/ui": patch
+---
+
+fix css module build script in buildCSSModules.js
diff --git a/packages/ui/scripts/buildCssModules.js b/packages/ui/scripts/buildCssModules.js
index 6eeab2c..82fca0e 100644
--- a/packages/ui/scripts/buildCssModules.js
+++ b/packages/ui/scripts/buildCssModules.js
@@ -1,25 +1,17 @@
 /* eslint-disable no-undef -- require import 오류 */
-const fs = require("node:fs");
-const path = require("node:path");
-const allVariables = require("../dist/cssVariables");
-const outputDir = require("../tsconfig.json").compilerOptions.outDir;
+const fs = require('node:fs');
+const path = require('node:path');
+const allVariables = require('../dist/cssVariables');
+const outputDir = require('../tsconfig.json').compilerOptions.outDir;
 
 Object.keys(allVariables).forEach((key) => {
-  const variableValues = Object.entries(allVariables).find(
-    ([name]) => name === key
-  )[1];
+  const variableValues = Object.entries(allVariables).find(([name]) => name === key)[1];
 
-  fs.writeFileSync(
-    path.join(outputDir, `${toFileName(key)}.css`),
-    `${variableValues}`
-  );
+  fs.writeFileSync(path.join(outputDir, `${toFileName(key)}.css`), `${variableValues}`);
 });
 
 function toCssCasing(str) {
-  return str
-    .replace(/(?:[a-z])/g, "$1")
-    .replace(/(?:[A-Z])/g, "-$1")
-    .toLowerCase();
+  return str.replace(/(?:[a-z])(?:[A-Z])/g, (match) => `${match[0]}-${match[1]}`).toLowerCase();
 }
 
 function toFileName(str) {