diff --git a/metadata/com.gitea.theoden8.sudaku.yml b/metadata/com.gitea.theoden8.sudaku.yml
index 1602f6dcc6..955c68d6b8 100644
--- a/metadata/com.gitea.theoden8.sudaku.yml
+++ b/metadata/com.gitea.theoden8.sudaku.yml
@@ -67,7 +67,12 @@ Builds:
   - versionName: 0.0.6
     versionCode: 9
     commit: 262e1478e913e740299f6698b3956fce9a695e64
-    sudo: rm -fr /opt/android-sdk/ndk/*
+    sudo:
+      - rm -fr /opt/android-sdk/ndk/*
+      - echo "deb https://deb.debian.org/debian bullseye main" > /etc/apt/sources.list.d/bullseye.list
+      - apt-get update
+      - apt-get install -y -t bullseye openjdk-11-jdk-headless
+      - update-java-alternatives --set java-1.11.0-openjdk-amd64
     output: build/app/outputs/apk/fdroid/release/app-fdroid-release.apk
     srclibs:
       - flutter@3.7.11