diff --git a/TerrariaServerAPI/TerrariaApi.Server/Hooking/NetHooks.cs b/TerrariaServerAPI/TerrariaApi.Server/Hooking/NetHooks.cs
index a638047..0bb7715 100644
--- a/TerrariaServerAPI/TerrariaApi.Server/Hooking/NetHooks.cs
+++ b/TerrariaServerAPI/TerrariaApi.Server/Hooking/NetHooks.cs
@@ -38,7 +38,7 @@ static void OnUpdateConnectedClients(object? sender, HookEvents.Terraria.Netplay
 		args.OriginalMethod();
 		if (ServerApi.ForceUpdate)
 		{
-			Terraria.Netplay.HasClients = true;
+			Terraria.Netplay.HasFullyConnectedClients = true;
 		}
 	}
 
@@ -192,7 +192,7 @@ static void OnConnectionAccepted(object? sender, HookEvents.Terraria.Netplay.OnC
 		}
 		if (FindNextOpenClientSlot() == -1)
 		{
-			Netplay.StopListening();
+			Netplay.TcpListener?.StopListening();
 		}
 	}
 
diff --git a/TerrariaServerAPI/TerrariaApi.Server/Hooking/NpcHooks.cs b/TerrariaServerAPI/TerrariaApi.Server/Hooking/NpcHooks.cs
index 1e248a0..1a93df7 100644
--- a/TerrariaServerAPI/TerrariaApi.Server/Hooking/NpcHooks.cs
+++ b/TerrariaServerAPI/TerrariaApi.Server/Hooking/NpcHooks.cs
@@ -52,7 +52,10 @@ static void OnStrike(NPC npc, HookEvents.Terraria.NPC.StrikeNPCEventArgs args)
 		if (!args.ContinueExecution) return;
 		if (args.entity is Player player)
 		{
-			if (_hookManager.InvokeNpcStrike(npc, ref args.Damage, ref args.knockBack, ref args.hitDirection, ref args.crit, ref args.noEffect, ref args.fromNet, player))
+			// 1.4.5.7 removed the noEffect parameter from NPC.StrikeNPC, so it is
+			// not part of the OTAPI hook args anymore; keep the internal API intact.
+			bool noEffect = false;
+			if (_hookManager.InvokeNpcStrike(npc, ref args.Damage, ref args.knockBack, ref args.hitDirection, ref args.crit, ref noEffect, ref args.fromNet, player))
 			{
 				args.ContinueExecution = false;
 				args.HookReturnValue = 0;
diff --git a/TerrariaServerAPI/TerrariaApi.Server/PacketTypes.cs b/TerrariaServerAPI/TerrariaApi.Server/PacketTypes.cs
index 079d7ac..b45e1f8 100644
--- a/TerrariaServerAPI/TerrariaApi.Server/PacketTypes.cs
+++ b/TerrariaServerAPI/TerrariaApi.Server/PacketTypes.cs
@@ -159,8 +159,10 @@ public enum PacketTypes
 	RequestSection = 159,
 	SyncItemPosition = 160,
 	HostToken = 161,
-
-	// Mobile version packets
+	// 1.4.5.7: 162 is the NPC strike acknowledgement (DamageNPCAck).
+	// The old mobile-only aliases are kept as same-value members for API compatibility,
+	// matching how OTAPI retains deprecated members for older plugins.
+	DamageNPCAck = 162,
 	ServerInfo = 162,
 	PlayerPlatformInfo = 163
 }
diff --git a/TerrariaServerAPI/TerrariaServerAPI.csproj b/TerrariaServerAPI/TerrariaServerAPI.csproj
index 61005da..6638c32 100644
--- a/TerrariaServerAPI/TerrariaServerAPI.csproj
+++ b/TerrariaServerAPI/TerrariaServerAPI.csproj
@@ -23,6 +23,6 @@
 	<ItemGroup>
 		<PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
 		<PackageReference Include="System.Diagnostics.PerformanceCounter" Version="9.0.0" />
-		<PackageReference Include="OTAPI.Upcoming" Version="3.3.11" />
+		<PackageReference Include="OTAPI.Upcoming" Version="3.3.12" />
 	</ItemGroup>
 </Project>