diff --git a/mappings/net/minecraft/client/world/ClientWorld.mapping b/mappings/net/minecraft/client/world/ClientWorld.mapping
index 3a2c284ffb..730bbffb98 100644
--- a/mappings/net/minecraft/client/world/ClientWorld.mapping
+++ b/mappings/net/minecraft/client/world/ClientWorld.mapping
@@ -9,6 +9,8 @@ CLASS net/minecraft/class_638 net/minecraft/client/world/ClientWorld
 	FIELD field_24606 skyProperties Lnet/minecraft/class_5294;
 	FIELD field_27733 entityList Lnet/minecraft/class_5574;
 	FIELD field_27734 entityManager Lnet/minecraft/class_5582;
+	FIELD field_32641 PARTICLE_Y_OFFSET D
+		COMMENT A minor offset applied when spawning particles.
 	FIELD field_3727 netHandler Lnet/minecraft/class_634;
 	FIELD field_3729 client Lnet/minecraft/class_310;
 	FIELD field_3733 scoreboard Lnet/minecraft/class_269;
diff --git a/mappings/net/minecraft/server/world/ServerWorld.mapping b/mappings/net/minecraft/server/world/ServerWorld.mapping
index d88654813c..4b10a9d5e8 100644
--- a/mappings/net/minecraft/server/world/ServerWorld.mapping
+++ b/mappings/net/minecraft/server/world/ServerWorld.mapping
@@ -22,6 +22,9 @@ CLASS net/minecraft/class_3218 net/minecraft/server/world/ServerWorld
 	FIELD field_26934 entityList Lnet/minecraft/class_5574;
 	FIELD field_26935 entityManager Lnet/minecraft/class_5579;
 	FIELD field_28859 sleepManager Lnet/minecraft/class_5838;
+	FIELD field_29768 SERVER_IDLE_COOLDOWN I
+		COMMENT The number of ticks ({@value}) the world will continue to tick entities after
+		COMMENT all players have left and the world does not contain any forced chunks.
 	METHOD <init> (Lnet/minecraft/server/MinecraftServer;Ljava/util/concurrent/Executor;Lnet/minecraft/class_32$class_5143;Lnet/minecraft/class_5268;Lnet/minecraft/class_5321;Lnet/minecraft/class_2874;Lnet/minecraft/class_3949;Lnet/minecraft/class_2794;ZJLjava/util/List;Z)V
 		ARG 1 server
 		ARG 2 workerExecutor
diff --git a/mappings/net/minecraft/world/World.mapping b/mappings/net/minecraft/world/World.mapping
index 34e4409bb2..2d67831b4f 100644
--- a/mappings/net/minecraft/world/World.mapping
+++ b/mappings/net/minecraft/world/World.mapping
@@ -10,6 +10,10 @@ CLASS net/minecraft/class_1937 net/minecraft/world/World
 	FIELD field_25181 END Lnet/minecraft/class_5321;
 	FIELD field_27081 pendingBlockEntityTickers Ljava/util/List;
 	FIELD field_27082 blockEntityTickers Ljava/util/List;
+	FIELD field_30965 HORIZONTAL_LIMIT I
+	FIELD field_30966 MAX_UPDATE_DEPTH I
+	FIELD field_30970 MAX_Y I
+	FIELD field_30971 MIN_Y I
 	FIELD field_9223 border Lnet/minecraft/class_2784;
 	FIELD field_9224 LOGGER Lorg/apache/logging/log4j/Logger;
 	FIELD field_9226 ambientDarkness I
@@ -19,7 +23,7 @@ CLASS net/minecraft/class_1937 net/minecraft/world/World
 	FIELD field_9234 thunderGradient F
 	FIELD field_9235 rainGradient F
 	FIELD field_9236 isClient Z
-	FIELD field_9238 unusedIncrement I
+	FIELD field_9238 lcgBlockSeedIncrement I
 	FIELD field_9247 dimension Lnet/minecraft/class_2874;
 	FIELD field_9249 iteratingTickingBlockEntities Z
 	FIELD field_9251 thunderGradientPrev F