diff --git a/gradle.properties b/gradle.properties
index 39a1cbfe4..18373f63f 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -2,7 +2,7 @@ group = org.purpurmc.purpur
 version = 1.21.5-R0.1-SNAPSHOT
 
 mcVersion = 1.21.5
-paperCommit = 6b26b21940bda7e0947d80b9a18f208ee7d570d9
+paperCommit = db8c646d00d3ede50650ae27c89fd66be3be89e6
 
 org.gradle.configuration-cache = true
 org.gradle.caching = true
diff --git a/purpur-server/minecraft-patches/sources/net/minecraft/server/network/ServerCommonPacketListenerImpl.java.patch b/purpur-server/minecraft-patches/sources/net/minecraft/server/network/ServerCommonPacketListenerImpl.java.patch
index 4af510735..274dd957b 100644
--- a/purpur-server/minecraft-patches/sources/net/minecraft/server/network/ServerCommonPacketListenerImpl.java.patch
+++ b/purpur-server/minecraft-patches/sources/net/minecraft/server/network/ServerCommonPacketListenerImpl.java.patch
@@ -33,18 +33,20 @@
          if (this.keepAlivePending && packet.getId() == this.keepAliveChallenge) {
              int i = (int)(Util.getMillis() - this.keepAliveTime);
              this.latency = (this.latency * 3 + i) / 4;
-@@ -159,6 +_,10 @@
-                 ServerGamePacketListenerImpl.LOGGER.error("Couldn't register custom payload", ex);
-                 this.disconnect(Component.literal("Invalid payload REGISTER!"), org.bukkit.event.player.PlayerKickEvent.Cause.INVALID_PAYLOAD); // Paper - kick event cause
+@@ -169,6 +_,12 @@
+                 return;
              }
-+        // Purpur start - Purpur client support
-+        } else if (identifier.equals(PURPUR_CLIENT)) {
-+            player.purpurClient = true;
-+        // Purpur end - Purpur client support
-         } else if (identifier.equals(ServerCommonPacketListenerImpl.CUSTOM_UNREGISTER)) {
-             try {
-                 String channels = payload.toString(java.nio.charset.StandardCharsets.UTF_8);
-@@ -238,6 +_,22 @@
+ 
++            // Purpur start - Purpur client support
++            if (identifier.equals(PURPUR_CLIENT)) {
++                this.player.purpurClient = true;
++            }
++            // Purpur end - Purpur client support
++
+             if (identifier.equals(MINECRAFT_BRAND)) {
+                 this.player.clientBrandName = new net.minecraft.network.FriendlyByteBuf(io.netty.buffer.Unpooled.wrappedBuffer(data)).readUtf(256);
+             }
+@@ -242,6 +_,22 @@
          // Paper start - give clients a longer time to respond to pings as per pre 1.12.2 timings
          // This should effectively place the keepalive handling back to "as it was" before 1.12.2
          final long elapsedTime = millis - this.keepAliveTime;
diff --git a/purpur-server/paper-patches/features/0005-Add-EntityTeleportHinderedEvent.patch b/purpur-server/paper-patches/features/0005-Add-EntityTeleportHinderedEvent.patch
index d08b9c1b0..f8f50cfdd 100644
--- a/purpur-server/paper-patches/features/0005-Add-EntityTeleportHinderedEvent.patch
+++ b/purpur-server/paper-patches/features/0005-Add-EntityTeleportHinderedEvent.patch
@@ -17,7 +17,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
-index e7fec5d2d54dc02bad76cb4100f597208ae46912..2344ee5f7c76d4c0eff375826e75cb97e104c3f1 100644
+index 67b9963afd91af84459d439697f6230fd67722b4..d8ed459b49624180e6939d9c5eefb453296f0559 100644
 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
 +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
 @@ -264,6 +264,7 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
@@ -29,10 +29,10 @@ index e7fec5d2d54dc02bad76cb4100f597208ae46912..2344ee5f7c76d4c0eff375826e75cb97
          }
  
 diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
-index 9bea9f41cbffaacb77b27636086c57b6f8cb17d7..dcdf06516b0bcfaa191ed82f4236602710d11e44 100644
+index caa156cd56605f74888df6f64d7be310fd384f09..f4676ec9ab14d748c820169467a03fc5d1230302 100644
 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
 +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
-@@ -1422,6 +1422,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+@@ -1421,6 +1421,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
          // Paper start - Teleport passenger API
          // Don't allow teleporting between worlds while keeping passengers
          if (ignorePassengers && entity.isVehicle() && location.getWorld() != this.getWorld()) {
@@ -40,7 +40,7 @@ index 9bea9f41cbffaacb77b27636086c57b6f8cb17d7..dcdf06516b0bcfaa191ed82f42366027
              return false;
          }
  
-@@ -1443,6 +1444,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+@@ -1442,6 +1443,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
          }
  
          if (entity.isVehicle() && !ignorePassengers) { // Paper - Teleport API
diff --git a/purpur-server/paper-patches/files/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java.patch b/purpur-server/paper-patches/files/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java.patch
index 7b9f83223..9d0b268b4 100644
--- a/purpur-server/paper-patches/files/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java.patch
+++ b/purpur-server/paper-patches/files/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java.patch
@@ -1,6 +1,6 @@
 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
 +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
-@@ -592,10 +_,15 @@
+@@ -591,10 +_,15 @@
  
      @Override
      public void setPlayerListName(String name) {
@@ -17,7 +17,7 @@
          if (this.getHandle().connection == null) return; // Paper - Updates are possible before the player has fully joined
          for (ServerPlayer player : (List<ServerPlayer>) this.server.getHandle().players) {
              if (player.getBukkitEntity().canSee(this)) {
-@@ -2732,6 +_,28 @@
+@@ -2731,6 +_,28 @@
          return this.getHandle().getAbilities().walkingSpeed * 2f;
      }
  
@@ -46,7 +46,7 @@
      private void validateSpeed(float value) {
          Preconditions.checkArgument(value <= 1f && value >= -1f, "Speed value (%s) need to be between -1f and 1f", value);
      }
-@@ -3594,4 +_,76 @@
+@@ -3593,4 +_,76 @@
      public void setSimplifyContainerDesyncCheck(final boolean simplifyContainerDesyncCheck) {
          this.simplifyContainerDesyncCheck = simplifyContainerDesyncCheck;
      }