diff --git a/metadata/at.bitfire.davdroid.yml b/metadata/at.bitfire.davdroid.yml
index 01bdd03ba1..c4b60a870a 100644
--- a/metadata/at.bitfire.davdroid.yml
+++ b/metadata/at.bitfire.davdroid.yml
@@ -1602,7 +1602,19 @@ Builds:
     gradle:
       - standard
 
+  - versionName: 4.2.1-ose
+    versionCode: 402010004
+    commit: d3c10c36b04841bb57d4589aac70dfa19a33f1d7
+    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: 4.2.0.3-ose
-CurrentVersionCode: 402000009
+CurrentVersion: 4.2.1-ose
+CurrentVersionCode: 402010004