diff --git a/metadata/de.schildbach.oeffi.yml b/metadata/de.schildbach.oeffi.yml
index 5b0602d063..beb955712f 100644
--- a/metadata/de.schildbach.oeffi.yml
+++ b/metadata/de.schildbach.oeffi.yml
@@ -830,8 +830,11 @@ Builds:
     sudo:
       - ln -fs /usr/share/zoneinfo/CET /etc/localtime
       - dpkg-reconfigure -f noninteractive tzdata
+      - echo "deb https://deb.debian.org/debian bullseye main" > /etc/apt/sources.list.d/bullseye.list
       - apt-get update
       - apt-get install -y gradle disorderfs
+      - apt-get install -y -t bullseye openjdk-11-jdk-headless
+      - update-java-alternatives --set java-1.11.0-openjdk-amd64
     init:
       - rm /home/vagrant/fdroidserver/gradlew-fdroid
       - ln -s /usr/bin/gradle /home/vagrant/fdroidserver/gradlew-fdroid