diff --git a/meta-portwell/meta-neptune/conf/layer.conf b/meta-portwell/meta-neptune/conf/layer.conf
index 4addb78..3ca3cac 100644
--- a/meta-portwell/meta-neptune/conf/layer.conf
+++ b/meta-portwell/meta-neptune/conf/layer.conf
@@ -8,4 +8,4 @@
 BBFILE_COLLECTIONS += "neptune"
 BBFILE_PATTERN_neptune = ""
 
-LAYERSERIES_COMPAT_neptune = "dunfell gatesgarth"
+LAYERSERIES_COMPAT_neptune = "gatesgarth hardknott"