diff --git a/mappings/net/minecraft/util/Util.mapping b/mappings/net/minecraft/util/Util.mapping
index de5e059be6..616a2bd21e 100644
--- a/mappings/net/minecraft/util/Util.mapping
+++ b/mappings/net/minecraft/util/Util.mapping
@@ -149,6 +149,9 @@ CLASS net/minecraft/class_156 net/minecraft/util/Util
 	METHOD method_39977 error (Ljava/lang/String;Ljava/lang/Throwable;)V
 		ARG 0 message
 		ARG 1 throwable
+	METHOD method_40083 getRandomOrEmpty (Ljava/util/List;Ljava/util/Random;)Ljava/util/Optional;
+		ARG 0 list
+		ARG 1 random
 	METHOD method_645 previous (Ljava/lang/Iterable;Ljava/lang/Object;)Ljava/lang/Object;
 		ARG 0 iterable
 		ARG 1 object
diff --git a/mappings/net/minecraft/util/registry/RegistryEntryList.mapping b/mappings/net/minecraft/util/registry/RegistryEntryList.mapping
new file mode 100644
index 0000000000..6bf2f69bea
--- /dev/null
+++ b/mappings/net/minecraft/util/registry/RegistryEntryList.mapping
@@ -0,0 +1,35 @@
+CLASS net/minecraft/class_6885 net/minecraft/util/registry/RegistryEntryList
+	METHOD method_40239 stream ()Ljava/util/stream/Stream;
+	METHOD method_40240 get (I)Lnet/minecraft/class_6880;
+		ARG 1 index
+	METHOD method_40241 contains (Lnet/minecraft/class_6880;)Z
+		ARG 1 entry
+	METHOD method_40242 of (Ljava/util/List;)Lnet/minecraft/class_6885$class_6886;
+		ARG 0 values
+	METHOD method_40243 getRandom (Ljava/util/Random;)Ljava/util/Optional;
+		ARG 1 random
+	METHOD method_40244 of (Ljava/util/function/Function;Ljava/util/List;)Lnet/minecraft/class_6885$class_6886;
+		ARG 0 mapper
+		ARG 1 values
+	METHOD method_40245 of (Ljava/util/function/Function;[Ljava/lang/Object;)Lnet/minecraft/class_6885$class_6886;
+		ARG 0 mapper
+		ARG 1 values
+	METHOD method_40246 of ([Lnet/minecraft/class_6880;)Lnet/minecraft/class_6885$class_6886;
+		ARG 0 values
+	METHOD method_40247 size ()I
+	METHOD method_40248 getStorage ()Lcom/mojang/datafixers/util/Either;
+	CLASS class_6886 Direct
+		FIELD field_36457 values Ljava/util/List;
+		FIELD field_36458 valuesSet Ljava/util/Set;
+		METHOD <init> (Ljava/util/List;)V
+			ARG 1 values
+	CLASS class_6887 ListBacked
+		METHOD method_40249 getValues ()Ljava/util/List;
+	CLASS class_6888 Named
+		FIELD field_36459 tag Lnet/minecraft/class_6862;
+		FIELD field_36460 cache Ljava/util/List;
+		METHOD <init> (Lnet/minecraft/class_6862;)V
+			ARG 1 tag
+		METHOD method_40250 cache (Ljava/util/List;)V
+			ARG 1 values
+		METHOD method_40251 getTag ()Lnet/minecraft/class_6862;