diff --git a/meta-fii/conf/layer.conf b/meta-fii/conf/layer.conf
index 8895ad5..4cb55ee 100644
--- a/meta-fii/conf/layer.conf
+++ b/meta-fii/conf/layer.conf
@@ -5,4 +5,4 @@
             ${LAYERDIR}/recipes-*/*/*.bbappend"
 BBFILE_COLLECTIONS += "fii-layer"
 BBFILE_PATTERN_fii-layer := "^${LAYERDIR}/"
-LAYERSERIES_COMPAT_fii-layer = "warrior zeus gatesgarth dunfell"
+LAYERSERIES_COMPAT_fii-layer = "warrior zeus gatesgarth dunfell hardknott"
diff --git a/meta-fii/meta-kudo/conf/layer.conf b/meta-fii/meta-kudo/conf/layer.conf
index 84da9fb..84c091c 100644
--- a/meta-fii/meta-kudo/conf/layer.conf
+++ b/meta-fii/meta-kudo/conf/layer.conf
@@ -7,4 +7,4 @@
 
 BBFILE_COLLECTIONS += "kudo-layer"
 BBFILE_PATTERN_kudo-layer = "^${LAYERDIR}/"
-LAYERSERIES_COMPAT_kudo-layer = "warrior zeus gatesgarth dunfell"
+LAYERSERIES_COMPAT_kudo-layer = "warrior zeus gatesgarth dunfell hardknott"