diff --git a/.upstream-data b/.upstream-data
index 1a13b05..c8d8297 100644
--- a/.upstream-data
+++ b/.upstream-data
@@ -1,2 +1,2 @@
-purpurCommit = 6d7bb23341546e6fbc0202578d833f6314571a5c
+purpurCommit = 561164b800712a7bd02ca0a7069c23bc71677b79
 pufferfishCommit = 845c015664150048d0a7c02b706fe1c05a91ac16
diff --git a/patches/api/0001-Pufferfish-API-Changes.patch b/patches/api/0001-Pufferfish-API-Changes.patch
index 5479596..75647a4 100644
--- a/patches/api/0001-Pufferfish-API-Changes.patch
+++ b/patches/api/0001-Pufferfish-API-Changes.patch
@@ -1,6 +1,6 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: AlphaKR93 <dev@alpha93.kr>
-Date: Sun, 4 Jun 2023 07:31:02 +0000
+Date: Sun, 4 Jun 2023 07:49:45 +0000
 Subject: [PATCH] Pufferfish API Changes
 
 Original: Kevin Raneri <kevin.raneri@gmail.com>
diff --git a/patches/api/0002-Purpur-API-Changes.patch b/patches/api/0002-Purpur-API-Changes.patch
index dd7864d..6c719db 100644
--- a/patches/api/0002-Purpur-API-Changes.patch
+++ b/patches/api/0002-Purpur-API-Changes.patch
@@ -1,6 +1,6 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: AlphaKR93 <dev@alpha93.kr>
-Date: Sun, 4 Jun 2023 07:34:44 +0000
+Date: Sun, 4 Jun 2023 07:52:25 +0000
 Subject: [PATCH] Purpur API Changes
 
 Original: PurpurMC
diff --git a/patches/server/0001-Pufferfish-Server-Changes.patch b/patches/server/0001-Pufferfish-Server-Changes.patch
index 89a29d7..784745a 100644
--- a/patches/server/0001-Pufferfish-Server-Changes.patch
+++ b/patches/server/0001-Pufferfish-Server-Changes.patch
@@ -1,6 +1,6 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: AlphaKR93 <dev@alpha93.kr>
-Date: Sun, 4 Jun 2023 07:31:01 +0000
+Date: Sun, 4 Jun 2023 07:49:45 +0000
 Subject: [PATCH] Pufferfish Server Changes
 
 Original: Kevin Raneri <kevin.raneri@gmail.com>
@@ -616,10 +616,10 @@ index 0000000000000000000000000000000000000000..020368da69b9a492155f6de6297f7473
 +}
 diff --git a/src/main/java/gg/pufferfish/pufferfish/PufferfishConfig.java b/src/main/java/gg/pufferfish/pufferfish/PufferfishConfig.java
 new file mode 100644
-index 0000000000000000000000000000000000000000..6e441a1a28ba72a8b1cc09fe5fca71b3c70627d4
+index 0000000000000000000000000000000000000000..f88e0b31b10b329fd8e94fc48148f490f31da646
 --- /dev/null
 +++ b/src/main/java/gg/pufferfish/pufferfish/PufferfishConfig.java
-@@ -0,0 +1,285 @@
+@@ -0,0 +1,293 @@
 +package gg.pufferfish.pufferfish;
 +
 +import gg.pufferfish.pufferfish.simd.SIMDDetection;
@@ -895,6 +895,14 @@ index 0000000000000000000000000000000000000000..6e441a1a28ba72a8b1cc09fe5fca71b3
 +				"This can improve performance by a few percent, but has minor gameplay implications.");
 +	}
 +
++	public static boolean allowEndCrystalRespawn;
++	private static void allowEndCrystalRespawn() {
++		getBoolean("allow-end-crystal-respawn", true,
++				"Allows end crystals to respawn the ender dragon.",
++				"On servers that expect end crystal fights in the end dimension, disabling this",
++				"will prevent the server from performing an expensive search to attempt respawning",
++				"the ender dragon whenever a player places an end crystal.");
++	}
 +
 +    public static boolean disableMethodProfiler;
 +	public static boolean disableOutOfOrderChat;
@@ -2665,6 +2673,19 @@ index 08f027cdcaeeca7b545483cb8c5eb8d13e4933b9..992ff554643b149d9c6101562a9754a8
          this.readChestVehicleSaveData(nbt);
      }
  
+diff --git a/src/main/java/net/minecraft/world/item/EndCrystalItem.java b/src/main/java/net/minecraft/world/item/EndCrystalItem.java
+index 171ce56ec3b8761f75144b1fca2f100fcbba6800..4202d8df909a6315cce0def93ad5241a519de43e 100644
+--- a/src/main/java/net/minecraft/world/item/EndCrystalItem.java
++++ b/src/main/java/net/minecraft/world/item/EndCrystalItem.java
+@@ -55,7 +55,7 @@ public class EndCrystalItem extends Item {
+                         world.gameEvent((Entity) context.getPlayer(), GameEvent.ENTITY_PLACE, blockposition1);
+                         EndDragonFight enderdragonbattle = ((ServerLevel) world).dragonFight();
+ 
+-                        if (enderdragonbattle != null) {
++                        if (enderdragonbattle != null && gg.pufferfish.pufferfish.PufferfishConfig.allowEndCrystalRespawn) { // Pufferfish
+                             enderdragonbattle.tryRespawn();
+                         }
+                     }
 diff --git a/src/main/java/net/minecraft/world/item/crafting/ShapelessRecipe.java b/src/main/java/net/minecraft/world/item/crafting/ShapelessRecipe.java
 index f4f3f3a19d3cadaef1ae1a47daa68251a983dcf2..8da06f8bea0239c5206d5d4f4ff48bdeb0a89f9d 100644
 --- a/src/main/java/net/minecraft/world/item/crafting/ShapelessRecipe.java
diff --git a/patches/server/0002-Purpur-Server-Changes.patch b/patches/server/0002-Purpur-Server-Changes.patch
index ef2b5e4..9e7c4ce 100644
--- a/patches/server/0002-Purpur-Server-Changes.patch
+++ b/patches/server/0002-Purpur-Server-Changes.patch
@@ -1,6 +1,6 @@
 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
 From: AlphaKR93 <dev@alpha93.kr>
-Date: Sun, 4 Jun 2023 07:34:44 +0000
+Date: Sun, 4 Jun 2023 07:52:24 +0000
 Subject: [PATCH] Purpur Server Changes
 
 Original: PurpurMC
@@ -249,7 +249,7 @@ index fa56cd09102a89692b42f1d14257990508c5c720..f9251183df72ddc56662fd3f02acf216
          setListData(vector);
      }
 diff --git a/src/main/java/gg/pufferfish/pufferfish/PufferfishConfig.java b/src/main/java/gg/pufferfish/pufferfish/PufferfishConfig.java
-index 6e441a1a28ba72a8b1cc09fe5fca71b3c70627d4..47e77541e558e18758ae0fcc2aa4e47261e928b6 100644
+index f88e0b31b10b329fd8e94fc48148f490f31da646..fd26eb27a2fcebe8c768305c587c908bcedacf1d 100644
 --- a/src/main/java/gg/pufferfish/pufferfish/PufferfishConfig.java
 +++ b/src/main/java/gg/pufferfish/pufferfish/PufferfishConfig.java
 @@ -28,6 +28,7 @@ public class PufferfishConfig {