diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 88360fa6eb3dd0616debf12efe20fb350b7b5161..75f4790fc276d7aa05b876876ccffeeb9acf4d43 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -141,7 +141,7 @@ build:chrome:beta:
     VARIANT: beta
   script:
     - apt-get -y update
-    - apt-get -y install zip
+    - apt-get -y install zip xxd
     - bash scripts/crxbuild.sh -o safelinks-cleaner-chrome-$VARIANT.crx -k "$CHROME_SIGNING_KEY" -s build/chrome
   rules:
     - if: '$CI_COMMIT_BRANCH != "master"'