diff --git a/mappings/net/minecraft/util/ChatUtil.mapping b/mappings/net/minecraft/util/ChatUtil.mapping
index f03d75879e..4309073bcc 100644
--- a/mappings/net/minecraft/util/ChatUtil.mapping
+++ b/mappings/net/minecraft/util/ChatUtil.mapping
@@ -9,3 +9,7 @@ CLASS net/minecraft/class_3544 net/minecraft/util/ChatUtil
 		ARG 0 text
 	METHOD method_34238 countLines (Ljava/lang/String;)I
 		ARG 0 text
+	METHOD method_34963 truncate (Ljava/lang/String;IZ)Ljava/lang/String;
+		ARG 0 text
+		ARG 1 maxLength
+		ARG 2 addEllipsis
diff --git a/mappings/net/minecraft/util/Formatting.mapping b/mappings/net/minecraft/util/Formatting.mapping
index 3f384df3f3..4e0a2ff25f 100644
--- a/mappings/net/minecraft/util/Formatting.mapping
+++ b/mappings/net/minecraft/util/Formatting.mapping
@@ -22,6 +22,7 @@ CLASS net/minecraft/class_124 net/minecraft/util/Formatting
 		ARG 5 modifier
 		ARG 6 colorIndex
 		ARG 7 colorValue
+	METHOD method_36145 getCode ()C
 	METHOD method_531 (Lnet/minecraft/class_124;)Ljava/lang/String;
 		ARG 0 f
 	METHOD method_532 getColorValue ()Ljava/lang/Integer;
diff --git a/mappings/net/minecraft/util/Language.mapping b/mappings/net/minecraft/util/Language.mapping
index eb190796d7..56076b88bb 100644
--- a/mappings/net/minecraft/util/Language.mapping
+++ b/mappings/net/minecraft/util/Language.mapping
@@ -3,6 +3,7 @@ CLASS net/minecraft/class_2477 net/minecraft/util/Language
 	FIELD field_11489 TOKEN_PATTERN Ljava/util/regex/Pattern;
 	FIELD field_11490 LOGGER Lorg/apache/logging/log4j/Logger;
 	FIELD field_25307 GSON Lcom/google/gson/Gson;
+	FIELD field_33187 DEFAULT_LANGUAGE Ljava/lang/String;
 	METHOD method_10517 getInstance ()Lnet/minecraft/class_2477;
 	METHOD method_29425 load (Ljava/io/InputStream;Ljava/util/function/BiConsumer;)V
 		ARG 0 inputStream
diff --git a/mappings/net/minecraft/util/collection/IdList.mapping b/mappings/net/minecraft/util/collection/IdList.mapping
index 1330e5298d..4909986034 100644
--- a/mappings/net/minecraft/util/collection/IdList.mapping
+++ b/mappings/net/minecraft/util/collection/IdList.mapping
@@ -10,3 +10,5 @@ CLASS net/minecraft/class_2361 net/minecraft/util/collection/IdList
 	METHOD method_10204 size ()I
 	METHOD method_10205 add (Ljava/lang/Object;)V
 		ARG 1 value
+	METHOD method_35841 containsKey (I)Z
+		ARG 1 index
diff --git a/mappings/net/minecraft/util/collection/Int2ObjectBiMap.mapping b/mappings/net/minecraft/util/collection/Int2ObjectBiMap.mapping
index e166366556..296cb4b8dc 100644
--- a/mappings/net/minecraft/util/collection/Int2ObjectBiMap.mapping
+++ b/mappings/net/minecraft/util/collection/Int2ObjectBiMap.mapping
@@ -26,3 +26,5 @@ CLASS net/minecraft/class_3513 net/minecraft/util/collection/Int2ObjectBiMap
 	METHOD method_15232 findIndex (Ljava/lang/Object;I)I
 		ARG 1 value
 		ARG 2 id
+	METHOD method_34903 containsKey (I)Z
+		ARG 1 index
diff --git a/mappings/net/minecraft/util/collection/PackedIntegerArray.mapping b/mappings/net/minecraft/util/collection/PackedIntegerArray.mapping
index 5df3d2f230..d5a13905a9 100644
--- a/mappings/net/minecraft/util/collection/PackedIntegerArray.mapping
+++ b/mappings/net/minecraft/util/collection/PackedIntegerArray.mapping
@@ -22,3 +22,4 @@ CLASS net/minecraft/class_3508 net/minecraft/util/collection/PackedIntegerArray
 	METHOD method_15215 getSize ()I
 	METHOD method_21739 forEach (Ljava/util/function/IntConsumer;)V
 		ARG 1 consumer
+	METHOD method_34896 getElementBits ()I
diff --git a/mappings/net/minecraft/util/collection/SortedArraySet.mapping b/mappings/net/minecraft/util/collection/SortedArraySet.mapping
index c2b6cca514..a875011c10 100644
--- a/mappings/net/minecraft/util/collection/SortedArraySet.mapping
+++ b/mappings/net/minecraft/util/collection/SortedArraySet.mapping
@@ -25,6 +25,7 @@ CLASS net/minecraft/class_4706 net/minecraft/util/collection/SortedArraySet
 		ARG 1 index
 	METHOD method_23871 get (I)Ljava/lang/Object;
 		ARG 1 index
+	METHOD method_34962 last ()Ljava/lang/Object;
 	CLASS class_4707 SetIterator
 		FIELD field_21566 nextIndex I
 		FIELD field_21567 lastIndex I
diff --git a/mappings/net/minecraft/util/collection/TypeFilterableList.mapping b/mappings/net/minecraft/util/collection/TypeFilterableList.mapping
index caeffb9f3d..82304554a4 100644
--- a/mappings/net/minecraft/util/collection/TypeFilterableList.mapping
+++ b/mappings/net/minecraft/util/collection/TypeFilterableList.mapping
@@ -34,5 +34,6 @@ CLASS net/minecraft/class_3509 net/minecraft/util/collection/TypeFilterableList
 			COMMENT the specialized type, must extend {@link #elementType}
 	METHOD method_15217 (Ljava/lang/Class;)Ljava/util/List;
 		ARG 1 typeClass
+	METHOD method_34897 copy ()Ljava/util/List;
 	METHOD remove (Ljava/lang/Object;)Z
 		ARG 1 o