diff --git a/content/posts/yunohost/20200625T000449+0900_system_upgrade/index.rst b/content/posts/yunohost/20200625T000449+0900_system_upgrade/index.rst
index cffd35d..0136796 100644
--- a/content/posts/yunohost/20200625T000449+0900_system_upgrade/index.rst
+++ b/content/posts/yunohost/20200625T000449+0900_system_upgrade/index.rst
@@ -1,3 +1,5 @@
+.. code-blocks:: shell
+
 root@nosignal:/home/admin# yunohost diagnosis show --issues
 reports:
   0: