diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 36ae0800d1808d2550ecccfca8a95bba72f51e4f..f1ee888e363ea4778b2c6f0a78d8fac9bf7281cb 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -6,6 +6,7 @@ stages:
 build:
   stage: build
   script:
+    - yum install zip
     - cd extension
     - zip -r ../safelinks-cleaner-thunderbird.xpi *
   artifacts: