diff --git a/documentation/ref-manual/ref-system-requirements.rst b/documentation/ref-manual/ref-system-requirements.rst
index 56218e4ebb..be50d699bc 100644
--- a/documentation/ref-manual/ref-system-requirements.rst
+++ b/documentation/ref-manual/ref-system-requirements.rst
@@ -43,18 +43,16 @@ distributions:
 
 -  Ubuntu 18.04 (LTS)
 
--  Ubuntu 20.04
+-  Ubuntu 19.04
+
+-  Fedora 28
+
+-  Fedora 29
 
 -  Fedora 30
 
--  Fedora 31
-
--  Fedora 32
-
 -  CentOS 7.x
 
--  CentOS 8.x
-
 -  Debian GNU/Linux 8.x (Jessie)
 
 -  Debian GNU/Linux 9.x (Stretch)