diff --git a/mappings/net/minecraft/SharedConstants.mapping b/mappings/net/minecraft/SharedConstants.mapping
index d7cd25a7f3..b1b1b047e1 100644
--- a/mappings/net/minecraft/SharedConstants.mapping
+++ b/mappings/net/minecraft/SharedConstants.mapping
@@ -8,6 +8,7 @@ CLASS net/minecraft/class_155 net/minecraft/SharedConstants
 	FIELD field_29702 TICKS_PER_SECOND I
 	FIELD field_29703 TICKS_PER_MINUTE I
 	FIELD field_29704 TICKS_PER_IN_GAME_DAY I
+	FIELD field_29709 IS_DEVELOPMENT_VERSION Z
 	FIELD field_29719 DEFAULT_PORT I
 	FIELD field_29729 CHUNK_WIDTH I
 	FIELD field_29730 DEFAULT_WORLD_HEIGHT I
@@ -15,6 +16,7 @@ CLASS net/minecraft/class_155 net/minecraft/SharedConstants
 	FIELD field_29732 WORLD_VERSION I
 	FIELD field_29733 VERSION_NAME Ljava/lang/String;
 	FIELD field_29734 RELEASE_TARGET Ljava/lang/String;
+	FIELD field_29735 RELEASE_TARGET_PROTOCOL_VERSION I
 	FIELD field_29737 SNBT_TOO_OLD_THRESHOLD I
 	FIELD field_29740 DATA_VERSION_KEY Ljava/lang/String;
 	METHOD method_16673 getGameVersion ()Lcom/mojang/bridge/game/GameVersion;