diff --git a/pom.xml b/pom.xml
index 2bcd39f..16c4e83 100644
--- a/pom.xml
+++ b/pom.xml
@@ -68,7 +68,7 @@
         <dependency>
             <groupId>org.geysermc</groupId>
             <artifactId>connector</artifactId>
-            <version>1.4.1-SNAPSHOT</version>
+            <version>1.4.2-SNAPSHOT</version>
         </dependency>
         <dependency>
             <groupId>com.nukkitx.network</groupId>
diff --git a/src/main/java/org/geysermc/connect/GeyserConnectConfig.java b/src/main/java/org/geysermc/connect/GeyserConnectConfig.java
index 753a7b0..29efa87 100644
--- a/src/main/java/org/geysermc/connect/GeyserConnectConfig.java
+++ b/src/main/java/org/geysermc/connect/GeyserConnectConfig.java
@@ -25,11 +25,9 @@
 
 package org.geysermc.connect;
 
-
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import lombok.Getter;
-import org.geysermc.connect.utils.WebUtils;
 import org.geysermc.connect.storage.AbstractStorageManager;
 import org.geysermc.connect.utils.Server;
 
diff --git a/src/main/java/org/geysermc/connect/MasterServer.java b/src/main/java/org/geysermc/connect/MasterServer.java
index 55130ca..052c658 100644
--- a/src/main/java/org/geysermc/connect/MasterServer.java
+++ b/src/main/java/org/geysermc/connect/MasterServer.java
@@ -28,6 +28,8 @@ package org.geysermc.connect;
 import com.google.common.cache.Cache;
 import com.google.common.cache.CacheBuilder;
 import com.nukkitx.protocol.bedrock.*;
+import io.netty.channel.DefaultEventLoopGroup;
+import io.netty.util.concurrent.DefaultThreadFactory;
 import lombok.Getter;
 import lombok.Setter;
 import org.geysermc.connect.storage.DisabledStorageManager;
@@ -90,6 +92,9 @@ public class MasterServer {
     @Getter
     private long lastDisconnectTime = 0L;
 
+    @Getter
+    private final DefaultEventLoopGroup eventLoopGroup = new DefaultEventLoopGroup(new DefaultThreadFactory("Geyser player thread"));
+
     public MasterServer() {
         instance = this;
 
diff --git a/src/main/java/org/geysermc/connect/PacketHandler.java b/src/main/java/org/geysermc/connect/PacketHandler.java
index 3e2f810..4a092bf 100644
--- a/src/main/java/org/geysermc/connect/PacketHandler.java
+++ b/src/main/java/org/geysermc/connect/PacketHandler.java
@@ -25,12 +25,15 @@
 
 package org.geysermc.connect;
 
+import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.ObjectReader;
 import com.fasterxml.jackson.databind.node.JsonNodeType;
 import com.nimbusds.jose.JWSObject;
 import com.nimbusds.jose.crypto.factories.DefaultJWSVerifierFactory;
+import com.nimbusds.jose.shaded.json.JSONArray;
 import com.nukkitx.network.util.DisconnectReason;
 import com.nukkitx.protocol.bedrock.BedrockPacketCodec;
 import com.nukkitx.protocol.bedrock.BedrockServerSession;
@@ -131,6 +134,18 @@ public class PacketHandler implements BedrockPacketHandler {
         }
 
         try {
+            // Convert the chainData to a JSONArray
+            ObjectReader reader = OBJECT_MAPPER.readerFor(new TypeReference<List<String>>() { });
+            JSONArray array = new JSONArray();
+            array.addAll(reader.readValue(chainData));
+
+            // Verify the chain data
+            if (!EncryptionUtils.verifyChain(array)) {
+                // Disconnect the client
+                session.disconnect("disconnectionScreen.internalError.cantConnect");
+                throw new AssertionError("Failed to login, due to invalid chain data!");
+            }
+
             // Parse the signed jws object
             JWSObject jwsObject;
             jwsObject = JWSObject.parse(chainData.get(chainData.size() - 1).asText());
diff --git a/src/main/java/org/geysermc/connect/proxy/GeyserProxySession.java b/src/main/java/org/geysermc/connect/proxy/GeyserProxySession.java
index ce29ae3..580f48f 100644
--- a/src/main/java/org/geysermc/connect/proxy/GeyserProxySession.java
+++ b/src/main/java/org/geysermc/connect/proxy/GeyserProxySession.java
@@ -26,12 +26,13 @@
 package org.geysermc.connect.proxy;
 
 import com.nukkitx.protocol.bedrock.BedrockServerSession;
+import io.netty.channel.EventLoop;
 import org.geysermc.connector.GeyserConnector;
 import org.geysermc.connector.network.session.GeyserSession;
 
 public class GeyserProxySession extends GeyserSession {
-    public GeyserProxySession(GeyserConnector connector, BedrockServerSession bedrockServerSession) {
-        super(connector, bedrockServerSession);
+    public GeyserProxySession(GeyserConnector connector, BedrockServerSession bedrockServerSession, EventLoop eventLoop) {
+        super(connector, bedrockServerSession, eventLoop);
     }
 
     @Override
diff --git a/src/main/java/org/geysermc/connect/utils/Player.java b/src/main/java/org/geysermc/connect/utils/Player.java
index 5180b21..f703b2b 100644
--- a/src/main/java/org/geysermc/connect/utils/Player.java
+++ b/src/main/java/org/geysermc/connect/utils/Player.java
@@ -35,6 +35,7 @@ import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
 import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
 import lombok.Getter;
 import lombok.Setter;
+import org.geysermc.connect.GeyserConnect;
 import org.geysermc.connect.MasterServer;
 import org.geysermc.connect.proxy.GeyserProxySession;
 import org.geysermc.connect.ui.FormID;
@@ -166,7 +167,7 @@ public class Player {
 
         // Send the biomes
         BiomeDefinitionListPacket biomeDefinitionListPacket = new BiomeDefinitionListPacket();
-        biomeDefinitionListPacket.setDefinitions(Registries.BIOMES.get());
+        biomeDefinitionListPacket.setDefinitions(Registries.BIOMES_NBT.get());
         session.sendPacket(biomeDefinitionListPacket);
 
         AvailableEntityIdentifiersPacket entityPacket = new AvailableEntityIdentifiersPacket();
@@ -227,7 +228,7 @@ public class Player {
             transferPacket.setPort(currentServer.getPort());
             session.sendPacket(transferPacket);
         } else {
-            GeyserProxySession geyserSession = new GeyserProxySession(GeyserConnector.getInstance(), session);
+            GeyserProxySession geyserSession = new GeyserProxySession(GeyserConnector.getInstance(), session, MasterServer.getInstance().getEventLoopGroup().next());
             session.setPacketHandler(new UpstreamPacketHandler(GeyserConnector.getInstance(), geyserSession));
 
             geyserSession.getUpstream().getSession().setPacketCodec(session.getPacketCodec());