diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ffae2679c323305a8c7457d7860da8369358cc8c..812cfe615eee8823129b9a9251414ce578c3e2e3 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -9,7 +9,7 @@ test-centos7:
   - yum install install -y python34-pip python34-devel
   - yum install -y gcc graphviz graphviz-devel
   - yum install -y httpd httpd-devel
-  - yum install gcc-c++
+  - yum install -y gcc-c++
   - cd ippisite
   - pip3 install -r requirements.txt
   - python3 manage.py test