diff --git a/packages/vite/src/node/optimizer/index.ts b/packages/vite/src/node/optimizer/index.ts
index a861ebf0d06836..6b09c265ffef16 100644
--- a/packages/vite/src/node/optimizer/index.ts
+++ b/packages/vite/src/node/optimizer/index.ts
@@ -166,7 +166,7 @@ export async function optimizeDeps(
   data.browserHash = createHash('sha256')
     .update(data.hash + JSON.stringify(deps))
     .digest('hex')
-    .substr(0, 8)
+    .substring(0, 8)
 
   const missingIds = Object.keys(missing)
   if (missingIds.length) {
@@ -408,5 +408,5 @@ function getDepHash(root: string, config: ResolvedConfig): string {
       return value
     }
   )
-  return createHash('sha256').update(content).digest('hex').substr(0, 8)
+  return createHash('sha256').update(content).digest('hex').substring(0, 8)
 }
diff --git a/packages/vite/src/node/plugins/asset.ts b/packages/vite/src/node/plugins/asset.ts
index 2cd423ae528c79..0fa017ddb8c2f9 100644
--- a/packages/vite/src/node/plugins/asset.ts
+++ b/packages/vite/src/node/plugins/asset.ts
@@ -223,7 +223,7 @@ export function assetFileNamesToFileName(
   // placeholders for `assetFileNames`
   // `hash` is slightly different from the rollup's one
   const extname = path.extname(basename)
-  const ext = extname.substr(1)
+  const ext = extname.substring(1)
   const name = basename.slice(0, -extname.length)
   const hash = contentHash