diff --git a/README.md b/README.md
index 9d85ee6..81a2f2c 100644
--- a/README.md
+++ b/README.md
@@ -55,6 +55,11 @@ The theme used is adapted from http://themes.gohugo.io/beautifulhugo/.
     your static generator has a configuration option that needs to be explicitly
     set in order to serve static assets under a relative URL.
 
+1. SSL certificate expired
+
+    see https://about.gitlab.com/2016/04/11/tutorial-securing-your-gitlab-pages-with-tls-and-letsencrypt/
+    (until we automate it with https://github.com/rolodato/gitlab-letsencrypt or custom api script)
+
 [hugo]: https://gohugo.io
 [install]: https://gohugo.io/overview/installing/
 [documentation]: https://gohugo.io/overview/introduction/