diff --git a/Assets/RenderHeads/ModulePatternSample/Scripts/Modules/MoverModule.cs b/Assets/RenderHeads/ModulePatternSample/Scripts/Modules/MoverModule.cs
index 4c99201..f451fd3 100644
--- a/Assets/RenderHeads/ModulePatternSample/Scripts/Modules/MoverModule.cs
+++ b/Assets/RenderHeads/ModulePatternSample/Scripts/Modules/MoverModule.cs
@@ -37,7 +37,7 @@ public void Stop()
         {
             _canMove = false;
         }
-        public void UpdateModule()
+        public void UpdateModule(float? deltaTime)
         {
             if (!_canMove)
             {
diff --git a/Assets/RenderHeads/ModulePatternSample/Scripts/Modules/SpawnerModule.cs b/Assets/RenderHeads/ModulePatternSample/Scripts/Modules/SpawnerModule.cs
index 877590e..3fdfebc 100644
--- a/Assets/RenderHeads/ModulePatternSample/Scripts/Modules/SpawnerModule.cs
+++ b/Assets/RenderHeads/ModulePatternSample/Scripts/Modules/SpawnerModule.cs
@@ -75,7 +75,7 @@ public void Stop()
             _canSpawn = false;
         }
 
-        public void UpdateModule()
+        public void UpdateModule(float? deltaTime)
         {
             if (!_canSpawn)
             {
diff --git a/Packages/RH.ModulePattern/Runtime/IModule.cs b/Packages/RH.ModulePattern/Runtime/IModule.cs
index b180ebc..e6ef8d1 100644
--- a/Packages/RH.ModulePattern/Runtime/IModule.cs
+++ b/Packages/RH.ModulePattern/Runtime/IModule.cs
@@ -1,20 +1,20 @@
-//(C) RenderHeads PTY LTD 2021
-//Author: Ross Borchers
+using System.Collections;
+using System.Collections.Generic;
 
 namespace RenderHeads.Tooling.Core.ModulePattern
 {
-	/// <summary>
-	/// Base interface for all modules, IModuleFactory requires modules inherit from this.
-	/// General module usage pattern is:
-	/// RAII. All initialization is done through the constructor. After a constructor is run the module should be fully usable.
-	/// UpdateModules should be called at regular intervals. The order of module updates should be controlled by the caller to ensure all dependencies have already been updated.
-	/// Pass in dependencies through the constructor IOC like.
-	/// </summary>
+    /// <summary>
+    /// Base interface for all modules, IModuleFactory requires modules inherit from this.
+    /// General module usage pattern is:
+    /// RAII. All initialization is done through the constructor. After a constructor is run the module should be fully usable.
+    /// UpdateModules should be called at regular intervals. The order of module updates should be controlled by the caller to ensure all dependencies have already been updated.
+    /// Pass in dependencies through the constructor IOC like.
+    /// </summary>
 	public interface IModule
-	{
-		/// <summary>
-		/// Should be called at a regular interval. The order of module updates should be controlled by the caller to ensure all dependencies have already been updated.
-		/// </summary>
-		void UpdateModule();
-	}
-}
\ No newline at end of file
+    {/// <summary>
+     /// Should be called at a regular interval. The order of module updates should be controlled by the caller to ensure all dependencies have already been updated.
+     /// </summary>
+     /// <param name="delta">Pass in a deltaTime calculated in parent update, if you want to pass that into underlying update event, so thay you don't need to query it within the method</param>
+        void UpdateModule(float? deltaTime = null);
+    }
+}