diff --git a/roles/gitlab/tasks/main.yml b/roles/gitlab/tasks/main.yml
index 8a3b3457835c3ffcccd5461c70b250a9637c3c0c..3e6ec8951671fb847a294f8b9003166c6ab42855 100644
--- a/roles/gitlab/tasks/main.yml
+++ b/roles/gitlab/tasks/main.yml
@@ -97,6 +97,7 @@
           }
         ]
         prometheus_monitoring['enable'] = false
+        postgresql['shared_buffers'] = "8GB"
     volumes:
       - "/srv/gitlab/config:/etc/gitlab"
       - "/srv/gitlab/logs:/var/log/gitlab"