diff --git a/templates/pages/download/linux/redhat.html b/templates/pages/download/linux/redhat.html
index 568085a..27ee179 100644
--- a/templates/pages/download/linux/redhat.html
+++ b/templates/pages/download/linux/redhat.html
@@ -51,6 +51,12 @@ The PostgreSQL Yum Repository currently supports:
 <p><strong><sup>*</sup>Note</strong>: due to the shorter support cycle
 on Fedora, all supported versions of PostgreSQL are not available on this platform. We do not recommend
 using Fedora for server deployments.
+
+<p><strong><sup>*</sup>Note</strong>: PostgreSQL can't install in CentOS 8 or RedHat Enterprise 8 just execute the following steps.</br>
+This is due to the new package management system.</br>
+If there are the non-modular packages that match by name with modular packages, they are filtered out.</br>
+Therefore, we need to disable Modularity by executing "dnf module disable postgresql" or specify "module_hotfixes=true" in the .repo file in order to install with these steps.</br>
+See also this page: <a href="https://github.com/rpm-software-management/dnf/blob/master/doc/modularity.rst#package-filtering">rpm-software-management/dnf/doc/</a>
 </p>
 <p>
 To use the PostgreSQL Yum Repository, follow these steps: