diff --git a/src/index.ts b/src/index.ts
index c9af0fd20..a00102d32 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -244,8 +244,10 @@ export async function build(_options: Options) {
               })
               worker.on('message', (data) => {
                 if (data === 'error') {
+                  worker.terminate()
                   reject(new Error('error occured in dts build'))
                 } else if (data === 'success') {
+                  worker.terminate()
                   resolve()
                 } else {
                   const { type, text } = data
diff --git a/src/rollup.ts b/src/rollup.ts
index cc8ae9524..37fe23583 100644
--- a/src/rollup.ts
+++ b/src/rollup.ts
@@ -240,7 +240,6 @@ const startRollup = async (options: NormalizedOptions) => {
     } catch {
       parentPort?.postMessage('error')
     }
-    parentPort?.close()
   }
 }
 
@@ -250,7 +249,6 @@ parentPort?.on('message', (data) => {
   if (!hasTypescript) {
     logger.error('dts', `You need to install "typescript" in your project`)
     parentPort?.postMessage('error')
-    parentPort?.close()
     return
   }
   startRollup(data.options)