diff --git a/static/install.html b/static/install.html
index 9a234066..4155cad8 100644
--- a/static/install.html
+++ b/static/install.html
@@ -79,6 +79,12 @@
 
             <p>You should have at least 2GB of free memory available.</p>
 
+            <p>Windows 10, macOS Catalina, Arch Linux, Debian buster and Ubuntu 20.04 LTS are the
+            officially supported operating systems for installing GrapheneOS. You should make sure
+            your operating system is up-to-date before proceeding with these instructions. Older
+            versions and other Linux distributions usually work, but if you encounter problems try
+            using one of the officially supported options.</p>
+
             <p>You need one of the officially supported devices. To make sure that the device can
             be unlocked to install GrapheneOS, avoid carrier variants of the devices. Carrier
             variants of Pixels use the same stock OS and firmware with a non-zero carrier id