diff --git a/packages/vite/src/node/__tests__/plugins/esbuild.spec.ts b/packages/vite/src/node/__tests__/plugins/esbuild.spec.ts
index d1c98348c5c453..b405c85e48f48b 100644
--- a/packages/vite/src/node/__tests__/plugins/esbuild.spec.ts
+++ b/packages/vite/src/node/__tests__/plugins/esbuild.spec.ts
@@ -17,6 +17,7 @@ describe('resolveEsbuildTranspileOptions', () => {
       'es'
     )
     expect(options).toEqual({
+      charset: 'utf8',
       target: 'es2020',
       format: 'esm',
       keepNames: true,
@@ -150,6 +151,7 @@ describe('resolveEsbuildTranspileOptions', () => {
       'cjs'
     )
     expect(options).toEqual({
+      charset: 'utf8',
       target: undefined,
       format: 'cjs',
       keepNames: true,
diff --git a/packages/vite/src/node/plugins/esbuild.ts b/packages/vite/src/node/plugins/esbuild.ts
index 43c319f2713761..a2d1fe14c95072 100644
--- a/packages/vite/src/node/plugins/esbuild.ts
+++ b/packages/vite/src/node/plugins/esbuild.ts
@@ -375,6 +375,7 @@ export function resolveEsbuildTranspileOptions(
     return {
       ...options,
       minify: true,
+      charset: 'utf8',
       treeShaking: true
     }
   }