diff --git a/metadata/com.governikus.ausweisapp2.yml b/metadata/com.governikus.ausweisapp2.yml
index 8b21a28e40..8a68d65ae8 100644
--- a/metadata/com.governikus.ausweisapp2.yml
+++ b/metadata/com.governikus.ausweisapp2.yml
@@ -19,6 +19,7 @@ Builds:
     commit: 1.16.1
     sudo:
       - apt update || apt update
+      - apt install -y g++
       - apt install -y -t stretch-backports cmake
     patch:
       - 1.16.1-unsigned-apk.patch