diff --git a/Content.Client/EntryPoint.cs b/Content.Client/EntryPoint.cs
index 342b55f..89bf46c 100644
--- a/Content.Client/EntryPoint.cs
+++ b/Content.Client/EntryPoint.cs
@@ -9,7 +9,7 @@ using Robust.Shared.Timing;
 // DEVNOTE: Games that want to be on the hub can change their namespace prefix in the "manifest.yml" file.
 namespace Content.Client;
 
-public class EntryPoint : GameClient
+public sealed class EntryPoint : GameClient
 {
     public override void Init()
     {
diff --git a/Content.Server/EntryPoint.cs b/Content.Server/EntryPoint.cs
index 0f3ab4c..6adb0ac 100644
--- a/Content.Server/EntryPoint.cs
+++ b/Content.Server/EntryPoint.cs
@@ -7,7 +7,7 @@ using Robust.Shared.Timing;
 // DEVNOTE: Games that want to be on the hub can change their namespace prefix in the "manifest.yml" file.
 namespace Content.Server;
 
-public class EntryPoint : GameServer
+public sealed class EntryPoint : GameServer
 {
     public override void Init()
     {
diff --git a/Content.Shared/EntryPoint.cs b/Content.Shared/EntryPoint.cs
index 82e6dd7..35f75a3 100644
--- a/Content.Shared/EntryPoint.cs
+++ b/Content.Shared/EntryPoint.cs
@@ -6,7 +6,7 @@ using Robust.Shared.Localization;
 // DEVNOTE: Games that want to be on the hub can change their namespace prefix in the "manifest.yml" file.
 namespace Content.Shared;
 
-public class EntryPoint : GameShared
+public sealed class EntryPoint : GameShared
 {
     // IoC services shared between the client and the server go here...