diff --git a/proxy/src/main/java/com/velocitypowered/proxy/VelocityServer.java b/proxy/src/main/java/com/velocitypowered/proxy/VelocityServer.java
index 4372e5604..ea0c3c0a1 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/VelocityServer.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/VelocityServer.java
@@ -40,7 +40,7 @@ import com.velocitypowered.proxy.server.ServerMap;
 import com.velocitypowered.proxy.util.AddressUtil;
 import com.velocitypowered.proxy.util.EncryptionUtils;
 import com.velocitypowered.proxy.util.VelocityChannelRegistrar;
-import com.velocitypowered.proxy.util.bossbar.BossBarManager;
+import com.velocitypowered.proxy.util.bossbar.AdventureBossBarManager;
 import com.velocitypowered.proxy.util.bossbar.VelocityBossBar;
 import com.velocitypowered.proxy.util.ratelimit.Ratelimiter;
 import com.velocitypowered.proxy.util.ratelimit.Ratelimiters;
@@ -112,7 +112,7 @@ public class VelocityServer implements ProxyServer, ForwardingAudience {
   private final AtomicBoolean shutdownInProgress = new AtomicBoolean(false);
   private boolean shutdown = false;
   private final VelocityPluginManager pluginManager;
-  private final BossBarManager bossBarManager;
+  private final AdventureBossBarManager bossBarManager;
 
   private final Map<UUID, ConnectedPlayer> connectionsByUuid = new ConcurrentHashMap<>();
   private final Map<String, ConnectedPlayer> connectionsByName = new ConcurrentHashMap<>();
@@ -131,7 +131,7 @@ public class VelocityServer implements ProxyServer, ForwardingAudience {
     cm = new ConnectionManager(this);
     servers = new ServerMap(this);
     this.options = options;
-    this.bossBarManager = new BossBarManager();
+    this.bossBarManager = new AdventureBossBarManager();
   }
 
   public KeyPair getServerKeyPair() {
@@ -626,7 +626,7 @@ public class VelocityServer implements ProxyServer, ForwardingAudience {
     return audiences;
   }
 
-  public BossBarManager getBossBarManager() {
+  public AdventureBossBarManager getBossBarManager() {
     return bossBarManager;
   }
 
diff --git a/proxy/src/main/java/com/velocitypowered/proxy/util/bossbar/BossBarManager.java b/proxy/src/main/java/com/velocitypowered/proxy/util/bossbar/AdventureBossBarManager.java
similarity index 96%
rename from proxy/src/main/java/com/velocitypowered/proxy/util/bossbar/BossBarManager.java
rename to proxy/src/main/java/com/velocitypowered/proxy/util/bossbar/AdventureBossBarManager.java
index 223c5ed25..7552e2202 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/util/bossbar/BossBarManager.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/util/bossbar/AdventureBossBarManager.java
@@ -21,7 +21,7 @@ import org.checkerframework.checker.nullness.qual.Nullable;
 /**
  * Manages all boss bars known to the proxy.
  */
-public class BossBarManager implements BossBar.Listener {
+public class AdventureBossBarManager implements BossBar.Listener {
   private static final Enum2IntMap<Color> COLORS_TO_PROTOCOL =
       new Enum2IntMap.Builder<>(Color.class)
           .put(Color.PINK, 0)
@@ -48,7 +48,7 @@ public class BossBarManager implements BossBar.Listener {
           .build();
   private final Map<BossBar, BossBarHolder> bars;
 
-  public BossBarManager() {
+  public AdventureBossBarManager() {
     this.bars = new MapMaker().weakKeys().makeMap();
   }
 
@@ -160,13 +160,13 @@ public class BossBarManager implements BossBar.Listener {
   }
 
   @Override
-  public void bossBarFlagsChanged(@NonNull BossBar bar, @NonNull Set<Flag> oldFlags,
-      @NonNull Set<Flag> newFlags) {
+  public void bossBarFlagsChanged(@NonNull BossBar bar, @NonNull Set<Flag> added,
+      @NonNull Set<Flag> removed) {
     BossBarHolder holder = this.getHandler(bar);
     if (holder == null) {
       return;
     }
-    com.velocitypowered.proxy.protocol.packet.BossBar packet = holder.createFlagsUpdate(newFlags);
+    com.velocitypowered.proxy.protocol.packet.BossBar packet = holder.createFlagsUpdate();
     for (ConnectedPlayer player : holder.subscribers) {
       player.getConnection().write(packet);
     }
@@ -184,7 +184,7 @@ public class BossBarManager implements BossBar.Listener {
     }
 
     void register() {
-      registrationOnce.run(() -> this.bar.addListener(BossBarManager.this));
+      registrationOnce.run(() -> this.bar.addListener(AdventureBossBarManager.this));
     }
 
     com.velocitypowered.proxy.protocol.packet.BossBar createRemovePacket() {
@@ -233,6 +233,10 @@ public class BossBarManager implements BossBar.Listener {
       return packet;
     }
 
+    com.velocitypowered.proxy.protocol.packet.BossBar createFlagsUpdate() {
+      return createFlagsUpdate(bar.flags());
+    }
+
     com.velocitypowered.proxy.protocol.packet.BossBar createFlagsUpdate(Set<Flag> newFlags) {
       com.velocitypowered.proxy.protocol.packet.BossBar packet = new com.velocitypowered
           .proxy.protocol.packet.BossBar();