diff --git a/metadata/at.bitfire.davdroid.yml b/metadata/at.bitfire.davdroid.yml
index d598ab6862..ea4a058dd6 100644
--- a/metadata/at.bitfire.davdroid.yml
+++ b/metadata/at.bitfire.davdroid.yml
@@ -1507,6 +1507,18 @@ Builds:
     gradle:
       - standard
 
+  - versionName: 4.0-beta1-ose
+    versionCode: 400000001
+    commit: 231e54db4ff0691d51e66ae87f14a3fcac85abcb
+    subdir: app
+    submodules: true
+    sudo:
+      - apt-get update || apt-get update
+      - apt-get install -y openjdk-11-jdk
+      - update-alternatives --auto java
+    gradle:
+      - standard
+
 AutoUpdateMode: Version v%v
 UpdateCheckMode: Tags ^v[0-9.]+-ose[0-9]*$
 CurrentVersion: 3.4.0.1-ose