diff --git a/metadata/cn.ac.lz233.tarnhelm.yml b/metadata/cn.ac.lz233.tarnhelm.yml
index 39d1b1e946..b3aecaa237 100644
--- a/metadata/cn.ac.lz233.tarnhelm.yml
+++ b/metadata/cn.ac.lz233.tarnhelm.yml
@@ -75,6 +75,10 @@ Builds:
     versionCode: 20230528
     commit: 5ccf6e37b809a97ff984f74e8b345328dbfff88b
     subdir: app
+    sudo:
+      - apt-get update
+      - apt-get install -y openjdk-17-jdk-headless
+      - update-java-alternatives -a
     gradle:
       - fdroid
     prebuild: sed -i -e '/versionCode/s/date.*/$$VERCODE$$/' build.gradle