diff --git a/doc/building-on-ubuntu-debian.md b/doc/building-on-ubuntu-debian.md
index bcfb54c6..5be17f81 100644
--- a/doc/building-on-ubuntu-debian.md
+++ b/doc/building-on-ubuntu-debian.md
@@ -1,7 +1,8 @@
 # Ubuntu / Debian building instructions
 
 Tested on a pristine:
- - Ubuntu 13.10 amd64
+ - Ubuntu 20.04 amd64
+ - Ubuntu 20.04 arm
 
 ## Install