diff --git a/metadata/ch.admin.bag.covidcertificate.verifier.yml b/metadata/ch.admin.bag.covidcertificate.verifier.yml
index 68f8b84670..803e05b6f3 100644
--- a/metadata/ch.admin.bag.covidcertificate.verifier.yml
+++ b/metadata/ch.admin.bag.covidcertificate.verifier.yml
@@ -334,7 +334,7 @@ Builds:
     subdir: verifier
     sudo:
       - apt-get update || apt-get update
-      - apt-get install -y openjdk-11-jdk-headless
+      - apt-get install -y apksigner openjdk-11-jdk-headless
       - update-alternatives --auto java
     gradle:
       - prod