diff --git a/metadata/eu.faircode.email.yml b/metadata/eu.faircode.email.yml
index 4f1fc31e35..3d105fa909 100644
--- a/metadata/eu.faircode.email.yml
+++ b/metadata/eu.faircode.email.yml
@@ -4719,7 +4719,9 @@ Builds:
       - update-alternatives --auto java
     gradle:
       - fdroid
-    prebuild: sed -i -e '/keystoreProperties/d' -e '/in-app-purchasing/d' build.gradle
+    prebuild:
+      - sed -i -e '/keystoreProperties/d' -e '/in-app-purchasing/d' build.gradle
+      - JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64 $$SDK$$/tools/bin/sdkmanager 'cmake;3.10.2.4988404'
     scandelete:
       - app/lib
     ndk: r25