diff --git a/metadata/com.calcitem.sanmill.yml b/metadata/com.calcitem.sanmill.yml
index d07279c0cb..1133e9a009 100644
--- a/metadata/com.calcitem.sanmill.yml
+++ b/metadata/com.calcitem.sanmill.yml
@@ -2698,6 +2698,39 @@ Builds:
       - $$flutter$$/bin/flutter build apk --flavor fdroid --release
     ndk: r25b
 
+  - versionName: 4.0.9
+    versionCode: 3929
+    commit: ce732b431d76644af3ed05f723fe4eebc52ba97a
+    subdir: src/ui/flutter_app
+    sudo:
+      - apt-get update
+      - apt-get install -y openjdk-17-jdk-headless
+      - update-java-alternatives -a
+    output: build/app/outputs/flutter-apk/app-fdroid-release.apk
+    srclibs:
+      - flutter@3.16.5
+    rm:
+      - src/test
+      - src/ui/flutter_app/ios
+      - src/ui/flutter_app/linux
+      - src/ui/flutter_app/macos
+      - src/ui/flutter_app/windows
+      - src/ui/flutter_app/test
+      - src/ui/qt
+      - tests
+    prebuild:
+      - mv android/app/build.gradle_fdroid android/app/build.gradle
+      - export PUB_CACHE=$(pwd)/.pub-cache
+      - export PATH=$$flutter$$/bin:$PATH
+      - cd ../../..
+      - ./flutter-init.sh
+    scandelete:
+      - src/ui/flutter_app/.pub-cache
+    build:
+      - export PUB_CACHE=$(pwd)/.pub-cache
+      - $$flutter$$/bin/flutter build apk --flavor fdroid --release
+    ndk: r25b
+
 MaintainerNotes: |-
   Builds will fail when the srclib ref of flutter and the version with which
   upstream has been built with differ.
@@ -2706,5 +2739,5 @@ MaintainerNotes: |-
 AutoUpdateMode: Version
 UpdateCheckMode: Tags ^v.*$
 UpdateCheckData: src/ui/flutter_app/pubspec.yaml|version:\s.+\+(\d+)|.|version:\s(.+)\+
-CurrentVersion: 4.0.8
-CurrentVersionCode: 3920
+CurrentVersion: 4.0.9
+CurrentVersionCode: 3929