diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a5d4aa9314e298a8db272c226c9bdee357ccb8e3..0decf0810b804c70bfe0a59174fd0e308efbe708 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -6,7 +6,7 @@ stages:
 build:
   stage: build
   script:
-    - apt install zip
+    - apt-get install p7zip p7zip-full
     - cd extension
     - zip -r ../safelinks-cleaner-thunderbird.xpi *
   artifacts: