diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 23aa3fcd5f..d980218299 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -383,6 +383,8 @@ fdroid build:
           $fdroid fetchsrclibs $build --verbose;
           $fdroid build --verbose --test --scan-binary --on-server --no-tarball $build;
           rm -rf "build/${build%:*}" || true;
+          apt-get install -y openjdk-11-jdk-headless;
+          update-alternatives --set java /usr/lib/jvm/java-11-openjdk-amd64/bin/java;
           ./tools/build-contains-signatures.py $build || continue;
           apt-get install sudo;
           $fdroid publish --verbose $build;