diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 1d4615827..284e4f6f4 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -8,6 +8,18 @@
     paths:
       - result/*
 
+
+.build_job_centos:
+  stage: build
+  script:
+     - yum -y install epel-release
+     - make rpm-dist
+     - ci-build-pkg
+  artifacts:
+     expire_in: 1 day
+     paths:
+       - result/*
+
 stages:
 - build
 - sign
@@ -36,6 +48,10 @@ build_bionic:
   image: buildpkg/ubuntu:bionic
   <<: *job_build
 
+build_centos_7:
+   image: buildpkg/centos:7
+   extends: .build_job_centos
+
 sign:
   image: buildpkg/debian:stretch
   stage: sign
@@ -50,6 +66,7 @@ sign:
     - build_buster
 #    - build_xenial
     - build_bionic
+    - build_centos_7
   artifacts:
     expire_in: 1 day
     paths:
diff --git a/rpm/lemonldap-ng.spec b/rpm/lemonldap-ng.spec
index 2d60efb09..02d2e0765 100644
--- a/rpm/lemonldap-ng.spec
+++ b/rpm/lemonldap-ng.spec
@@ -58,6 +58,7 @@ Source0:        https://release.ow2.org/lemonldap/%{name}-%{version}%{?pre_relea
 BuildArch:      noarch
 
 BuildRequires:  gnupg
+BuildRequires:  which
 BuildRequires:  perl-generators
 BuildRequires:  perl-interpreter
 BuildRequires:  perl(Apache2::Connection)