diff --git a/src/system.js b/src/system.js
index 0d5702795..281f69a33 100644
--- a/src/system.js
+++ b/src/system.js
@@ -362,10 +362,10 @@ async function getUbuntuVersion() {
 }
 
 async function checkUbuntuVersion() {
-    const isXenial = fs.readFileSync('/etc/lsb-release', 'utf-8').includes('16.04');
-    if (!isXenial) return;
+    const isBionic = fs.readFileSync('/etc/lsb-release', 'utf-8').includes('18.04');
+    if (!isBionic) return;
 
-    await notifications.alert(notifications.ALERT_UPDATE_UBUNTU, 'Ubuntu upgrade required', 'Ubuntu 16.04 has reached end of life and will not receive security and maintenance updates. Please follow https://docs.cloudron.io/guides/upgrade-ubuntu-18/ to upgrade to Ubuntu 18 at the earliest.', { persist: true });
+    await notifications.alert(notifications.ALERT_UPDATE_UBUNTU, 'Ubuntu upgrade required', 'Ubuntu 18.04 has reached end of life and will not receive security and maintenance updates. Please follow https://docs.cloudron.io/guides/upgrade-ubuntu-20/ to upgrade to Ubuntu 18 at the earliest.', { persist: true });
 }
 
 async function runSystemChecks() {