diff --git a/build-data/mappings-patch.tiny b/build-data/mappings-patch.tiny
deleted file mode 100644
index 14a2a3582..000000000
--- a/build-data/mappings-patch.tiny
+++ /dev/null
@@ -1,5 +0,0 @@
-tiny	2	0	spigot	mojang+yarn
-
-# Originally DistanceManager, which also implements DistanceManager, so clashes since the implemented class
-# is imported and not fully qualified. Easiest fix is to just change the name
-c	net/minecraft/server/level/PlayerChunkMap$a	net/minecraft/server/level/ChunkMap$ChunkDistanceManager
diff --git a/build-data/paper.at b/build-data/paper.at
deleted file mode 100644
index 48a44de36..000000000
--- a/build-data/paper.at
+++ /dev/null
@@ -1,18 +0,0 @@
-# You can use this file to change the access modifiers on a member
-# This line would make the field rollAmount public in Bee
-#public net.minecraft.world.entity.animal.Bee rollAmount
-# This line would make the field public and remove the final modifier
-#public-f net.minecraft.network.protocol.game.ClientboundChatPacket sender
-# Leave out the member and it will apply to the class itself
-# More info, see here https://mcforge.readthedocs.io/en/latest/advanced/accesstransformers/#access-modifiers
-
-# Remap/Decompile fix (unclear why this is happening)
-public net.minecraft.server.MinecraftServer doRunTask(Lnet/minecraft/server/TickTask;)V
-
-# AT remap issue? todo 1.18
-public net.minecraft.world.level.dimension.end.EndDragonFight findExitPortal()Lnet/minecraft/world/level/block/state/pattern/BlockPattern$BlockPatternMatch;
-public net.minecraft.nbt.TagParser readArrayTag()Lnet/minecraft/nbt/Tag;
-
-# TODO 1.20 remapSpigotAt.at doesn't remap the return type for this method for some reason
-public net/minecraft/world/entity/Display$TextDisplay getText()Lnet/minecraft/network/chat/Component;
-public net/minecraft/world/entity/Display$BlockDisplay getBlockState()Lnet/minecraft/world/level/block/state/BlockState;
diff --git a/build-data/reobf-mappings-patch.tiny b/build-data/reobf-mappings-patch.tiny
deleted file mode 100644
index 347b2b8fd..000000000
--- a/build-data/reobf-mappings-patch.tiny
+++ /dev/null
@@ -1,28 +0,0 @@
-# We would like for paperweight to generate 100% perfect reobf mappings (and deobf mappings for that matter).
-# But unfortunately it's not quite there yet - and it may be some time before that happens. Generating perfect mappings
-# from Spigot's mappings is extremely difficult due to Spigot's bad tooling and bad mappings. To add insult to injury
-# we remap Spigot's _source code_ which is a lot more complex and error-prone than bytecode remapping. So with all that
-# said, this file exists to help fill in the gap.
-#
-# We will continue to improve paperweight and will work on fixing these issues so they don't come up in the first place,
-# but these mappings exist to prevent these issues from holding everything else in Paper up while we work through all
-# of these issues. Due to the complex nature of mappings generation and the debugging difficulty involved it may take
-# a significant amount of time for us to track down every possible issue, so this file will likely be around and in
-# use - at least in some capacity - for a long time.
-
-tiny	2	0	mojang+yarn	spigot
-
-# CraftBukkit changes type
-c	net/minecraft/server/level/ServerLevel	net/minecraft/server/level/WorldServer
-	f	Lnet/minecraft/world/level/storage/PrimaryLevelData;	serverLevelData	K
-
-c	net/minecraft/world/level/chunk/LevelChunk	net/minecraft/world/level/chunk/Chunk
-	f	Lnet/minecraft/server/level/ServerLevel;	level	r
-
-# See mappings-patch.tiny
-c	net/minecraft/server/level/ChunkMap	net/minecraft/server/level/PlayerChunkMap
-	f	Lnet/minecraft/server/level/ChunkMap$ChunkDistanceManager;	distanceManager	F
-
-# The method is made public by Spigot, which then causes accidental overrides
-c	net/minecraft/world/entity/Entity	net/minecraft/world/entity/Entity
-	m	()Z	isInRain	isInRain0
diff --git a/gradle.properties b/gradle.properties
index 4c862b087..d24a33b62 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,7 +1,7 @@
 group=com.lokamc.slice
 version=1.21.3-R0.1-SNAPSHOT
 mcVersion=1.21.3
-paperRef=c28d89d625c60243c52857e0c7e6398b73602156
+paperRef=817550c5204f752e0a5dc05ff26320560058a911
 updatingMinecraft=false
 
 org.gradle.caching=true