diff --git a/flutter_hbb/build.sh b/flutter_hbb/build.sh
new file mode 100755
index 000000000..d0372066d
--- /dev/null
+++ b/flutter_hbb/build.sh
@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+flutter build apk --target-platform  android-arm64  --release
diff --git a/flutter_hbb/ndk_arm64.sh b/flutter_hbb/ndk_arm64.sh
new file mode 100644
index 000000000..d28009f6c
--- /dev/null
+++ b/flutter_hbb/ndk_arm64.sh
@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+cargo ndk --platform 21 --target aarch64-linux-android build --release
diff --git a/flutter_hbb/ndk_x64.sh b/flutter_hbb/ndk_x64.sh
new file mode 100644
index 000000000..6272b0390
--- /dev/null
+++ b/flutter_hbb/ndk_x64.sh
@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+cargo ndk --platform 21 --target x86_64-linux-android build --release
diff --git a/flutter_hbb/pubspec.lock b/flutter_hbb/pubspec.lock
index caa914825..d16209cd5 100644
--- a/flutter_hbb/pubspec.lock
+++ b/flutter_hbb/pubspec.lock
@@ -21,42 +21,42 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.5.0-nullsafety.1"
+    version: "2.5.0"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0-nullsafety.1"
+    version: "2.1.0"
   characters:
     dependency: transitive
     description:
       name: characters
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0-nullsafety.3"
+    version: "1.1.0"
   charcode:
     dependency: transitive
     description:
       name: charcode
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0-nullsafety.1"
+    version: "1.2.0"
   clock:
     dependency: transitive
     description:
       name: clock
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0-nullsafety.1"
+    version: "1.1.0"
   collection:
     dependency: transitive
     description:
       name: collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.15.0-nullsafety.3"
+    version: "1.15.0"
   convert:
     dependency: transitive
     description:
@@ -105,7 +105,7 @@ packages:
       name: fake_async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0-nullsafety.1"
+    version: "1.2.0"
   ffi:
     dependency: "direct main"
     description:
@@ -255,21 +255,21 @@ packages:
       name: js
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.6.2"
+    version: "0.6.3"
   matcher:
     dependency: transitive
     description:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.10-nullsafety.1"
+    version: "0.12.10"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.0-nullsafety.3"
+    version: "1.3.0"
   nested:
     dependency: transitive
     description:
@@ -290,7 +290,7 @@ packages:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.0-nullsafety.1"
+    version: "1.8.0"
   path_provider:
     dependency: "direct main"
     description:
@@ -428,42 +428,42 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.8.0-nullsafety.2"
+    version: "1.8.0"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.10.0-nullsafety.1"
+    version: "1.10.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0-nullsafety.1"
+    version: "2.1.0"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0-nullsafety.1"
+    version: "1.1.0"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0-nullsafety.1"
+    version: "1.2.0"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.19-nullsafety.2"
+    version: "0.2.19"
   tuple:
     dependency: "direct main"
     description:
@@ -477,7 +477,7 @@ packages:
       name: typed_data
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.0-nullsafety.3"
+    version: "1.3.0"
   url_launcher:
     dependency: "direct main"
     description:
@@ -526,7 +526,7 @@ packages:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0-nullsafety.3"
+    version: "2.1.0"
   wakelock:
     dependency: "direct main"
     description:
@@ -577,5 +577,5 @@ packages:
     source: hosted
     version: "2.2.1"
 sdks:
-  dart: ">=2.10.0-110 <2.11.0"
-  flutter: ">=1.22.0 <2.0.0"
+  dart: ">=2.12.0-0.0 <3.0.0"
+  flutter: ">=1.22.0"