diff --git a/mappings/net/minecraft/client/gui/menu/AlwaysSelectedItemListWidget.mapping b/mappings/net/minecraft/client/gui/menu/AlwaysSelectedItemListWidget.mapping
new file mode 100644
index 0000000000..790c16ba9c
--- /dev/null
+++ b/mappings/net/minecraft/client/gui/menu/AlwaysSelectedItemListWidget.mapping
@@ -0,0 +1 @@
+CLASS cwm net/minecraft/client/gui/menu/AlwaysSelectedItemListWidget
diff --git a/mappings/net/minecraft/world/gen/feature/FillLayerFeature.mapping b/mappings/net/minecraft/world/gen/feature/FillLayerFeature.mapping
new file mode 100644
index 0000000000..4bcb3ed480
--- /dev/null
+++ b/mappings/net/minecraft/world/gen/feature/FillLayerFeature.mapping
@@ -0,0 +1 @@
+CLASS caw net/minecraft/world/gen/feature/FillLayerFeature
diff --git a/mappings/net/minecraft/world/gen/feature/FillLayerFeatureConfig.mapping b/mappings/net/minecraft/world/gen/feature/FillLayerFeatureConfig.mapping
new file mode 100644
index 0000000000..4b3b855e28
--- /dev/null
+++ b/mappings/net/minecraft/world/gen/feature/FillLayerFeatureConfig.mapping
@@ -0,0 +1,8 @@
+CLASS cbw net/minecraft/world/gen/feature/FillLayerFeatureConfig
+	FIELD a height I
+	FIELD b state Lbuz;
+	METHOD <init> (ILbuz;)V
+		ARG 1 height
+		ARG 2 state
+	METHOD a deserialize (Lcom/mojang/datafixers/Dynamic;)Lcbw;
+		ARG 0 dynamic