diff --git a/mappings/net/minecraft/block/RailPlacementHelper.mapping b/mappings/net/minecraft/block/RailPlacementHelper.mapping
index 90ecf12dc1..7f47c8172f 100644
--- a/mappings/net/minecraft/block/RailPlacementHelper.mapping
+++ b/mappings/net/minecraft/block/RailPlacementHelper.mapping
@@ -9,24 +9,26 @@ CLASS net/minecraft/class_2452 net/minecraft/block/RailPlacementHelper
 		ARG 1 world
 		ARG 2 pos
 		ARG 3 state
-	METHOD method_10455 (Lnet/minecraft/class_2452;)Z
+	METHOD method_10455 canConnect (Lnet/minecraft/class_2452;)Z
 		ARG 1 placementHelper
 	METHOD method_10456 isVerticallyNearRail (Lnet/minecraft/class_2338;)Z
 		ARG 1 pos
 	METHOD method_10457 getNeighbors ()Ljava/util/List;
-	METHOD method_10458 (Lnet/minecraft/class_2338;)Lnet/minecraft/class_2452;
+	METHOD method_10458 getNeighboringRail (Lnet/minecraft/class_2338;)Lnet/minecraft/class_2452;
 		ARG 1 pos
 	METHOD method_10459 updateBlockState (ZZLnet/minecraft/class_2768;)Lnet/minecraft/class_2452;
 		ARG 1 powered
 		ARG 2 forceUpdate
-	METHOD method_10461 (Lnet/minecraft/class_2452;)V
+	METHOD method_10460 getNeighborCount ()I
+	METHOD method_10461 computeRailShape (Lnet/minecraft/class_2452;)V
 		ARG 1 placementHelper
 	METHOD method_10462 getBlockState ()Lnet/minecraft/class_2680;
 	METHOD method_10463 isNeighbor (Lnet/minecraft/class_2338;)Z
 		ARG 1 pos
 	METHOD method_10464 isNeighbor (Lnet/minecraft/class_2452;)Z
 		ARG 1 other
-	METHOD method_10465 (Lnet/minecraft/class_2338;)Z
+	METHOD method_10465 canConnect (Lnet/minecraft/class_2338;)Z
 		ARG 1 pos
 	METHOD method_10466 computeNeighbors (Lnet/minecraft/class_2768;)V
 		ARG 1 shape
+	METHOD method_10467 updateNeighborPositions ()V