diff --git a/ct/omada-v3.sh b/ct/omada-v3.sh
index 14a0bb12..be57d41d 100644
--- a/ct/omada-v3.sh
+++ b/ct/omada-v3.sh
@@ -324,7 +324,7 @@ pushd $TEMP_DIR >/dev/null
 
 export CTID=$CT_ID
 export PCT_OSTYPE=ubuntu
-export PCT_OSVERSION=18.04
+export PCT_OSVERSION=20.04
 export PCT_DISK_SIZE=$DISK_SIZE
 export PCT_OPTIONS="
   -features $FEATURES