diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c14fe1746df71de6bf42cbe69a6ab7740fe884d9..deb008cdf717526b6424c8b142eb32bb23828758 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -14,7 +14,7 @@ before_script:
     - export PGHOST=postgres PGUSER=$POSTGRES_USER PGPASSWORD=$POSTGRES_PASSWORD PGSSLMODE=disable
     - export DB_URL="host=postgres user=$POSTGRES_USER password=$POSTGRES_PASSWORD sslmode=disable"
     - apt update
-    - apt install --yes libpam0g-dev libgnutls28-dev libpam-wrapper pamtester oathtool postgresql
+    - apt install --yes libpam0g-dev libgnutls28-dev libpam-wrapper pamtester oathtool postgresql xxd
 
 go1.8:
     image: golang:1.8-stretch