diff --git a/metadata/org.secuso.privacyfriendlysketching.yml b/metadata/org.secuso.privacyfriendlysketching.yml
index 29f6e19531..930a29091e 100644
--- a/metadata/org.secuso.privacyfriendlysketching.yml
+++ b/metadata/org.secuso.privacyfriendlysketching.yml
@@ -47,6 +47,10 @@ Builds:
     commit: cb8056afd7c77a60b8a58d159046698443475085
     subdir: app
     submodules: true
+    sudo:
+      - apt-get update || apt-get update
+      - apt-get install -y openjdk-11-jdk-headless
+      - update-alternatives --auto java
     gradle:
       - yes