diff --git a/lerna.json b/lerna.json
index 0eca008844..5408f89b17 100644
--- a/lerna.json
+++ b/lerna.json
@@ -1,7 +1,5 @@
 {
-  "packages": [
-    "packages/*"
-  ],
+  "packages": ["packages/*"],
   "npmClient": "yarn",
   "useWorkspaces": true,
   "version": "1.0.0-alpha.12"
diff --git a/packages/cli/scripts/start.js b/packages/cli/scripts/start.js
index ad93dddb12..5079955af3 100644
--- a/packages/cli/scripts/start.js
+++ b/packages/cli/scripts/start.js
@@ -251,11 +251,17 @@ async function startBuilder(cdkInputFiles) {
     });
 }
 function stopBuilder() {
+  // Stop esbuild rebuild processes
   Object.keys(builderState.entryPointsData).forEach((key) => {
     if (builderState.entryPointsData[key].esbuilder !== null) {
       builderState.entryPointsData[key].esbuilder.rebuild.dispose();
     }
   });
+
+  // Stop esbuild service
+  if (esbuildService) {
+    esbuildService.stop();
+  }
 }
 async function updateBuilder() {
   builderLogger.silly(serializeState());