diff --git a/packages/dev-middleware/src/middleware/openDebuggerMiddleware.js b/packages/dev-middleware/src/middleware/openDebuggerMiddleware.js
index 490eb5d91f80b7..e10a3a9f5e2069 100644
--- a/packages/dev-middleware/src/middleware/openDebuggerMiddleware.js
+++ b/packages/dev-middleware/src/middleware/openDebuggerMiddleware.js
@@ -156,6 +156,7 @@ export default function openDebuggerMiddleware({
           appId: appId ?? null,
           deviceId: device ?? null,
           resolvedTargetDescription: target.description,
+          resolvedTargetAppId: target.appId,
           prefersFuseboxFrontend: useFuseboxEntryPoint ?? false,
         });
         return;
diff --git a/packages/dev-middleware/src/types/EventReporter.js b/packages/dev-middleware/src/types/EventReporter.js
index f578f745cf3a6f..8c4bc2b52aed49 100644
--- a/packages/dev-middleware/src/types/EventReporter.js
+++ b/packages/dev-middleware/src/types/EventReporter.js
@@ -41,6 +41,7 @@ export type ReportableEvent =
             appId: string | null,
             deviceId: string | null,
             resolvedTargetDescription: string,
+            resolvedTargetAppId: string,
             prefersFuseboxFrontend: boolean,
           }>
         | ErrorResult<mixed>