diff --git a/mappings/net/minecraft/server/MinecraftServer.mapping b/mappings/net/minecraft/server/MinecraftServer.mapping
index 035428551e..a5c229a440 100644
--- a/mappings/net/minecraft/server/MinecraftServer.mapping
+++ b/mappings/net/minecraft/server/MinecraftServer.mapping
@@ -46,6 +46,7 @@ CLASS net/minecraft/server/MinecraftServer
 	FIELD field_33978 debugStart Lnet/minecraft/server/MinecraftServer$class_6414;
 	FIELD field_33979 needsDebugSetup Z
 	FIELD field_34982 VANILLA Ljava/lang/String;
+	FIELD field_35437 saving Z
 	FIELD field_4543 onlineMode Z
 	FIELD field_4544 running Z
 	FIELD field_4546 LOGGER Lorg/apache/logging/log4j/Logger;
@@ -417,6 +418,11 @@ CLASS net/minecraft/server/MinecraftServer
 		ARG 1 onlineMode
 			COMMENT whether the server will be in online mode
 	METHOD method_3866 shouldKeepTicking ()Z
+	METHOD method_39218 saveAll (ZZZ)Z
+		ARG 1 suppressLogs
+		ARG 2 flush
+		ARG 3 force
+	METHOD method_39219 isSaving ()Z
 	METHOD method_5387 isMainThread ()Z
 	CLASS class_6414 DebugStart
 		FIELD field_33980 time J
diff --git a/mappings/net/minecraft/world/gen/random/RandomDeriver.mapping b/mappings/net/minecraft/world/gen/random/RandomDeriver.mapping
index bf0ebbbd1b..9618c9702d 100644
--- a/mappings/net/minecraft/world/gen/random/RandomDeriver.mapping
+++ b/mappings/net/minecraft/world/gen/random/RandomDeriver.mapping
@@ -8,5 +8,6 @@ CLASS net/minecraft/class_6574 net/minecraft/world/gen/random/RandomDeriver
 	METHOD method_38995 createRandom (Ljava/lang/String;)Lnet/minecraft/class_5819;
 		ARG 1 string
 	METHOD method_39000 createRandom (Lnet/minecraft/class_2960;)Lnet/minecraft/class_5819;
+		ARG 1 id
 	METHOD method_39039 addDebugInfo (Ljava/lang/StringBuilder;)V
 		ARG 1 info