diff --git a/Packages/com.unity.inputsystem/CHANGELOG.md b/Packages/com.unity.inputsystem/CHANGELOG.md
index 269ed3455a..a914ac69c6 100644
--- a/Packages/com.unity.inputsystem/CHANGELOG.md
+++ b/Packages/com.unity.inputsystem/CHANGELOG.md
@@ -24,6 +24,7 @@ however, it has to be formatted properly to pass verification tests.
 - Fixed Gamepad stick up/down inputs that were not recognized in WebGL. [ISXB-1090](https://issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1090)
 - Fixed PlayerInput component automatically switching away from the default ActionMap set to 'None'.
 - Fixed a console error being shown when targeting visionOS builds in 2022.3.
+- Fixed unknown event source error in XR when receiving events from a TrackedDevice.
 
 ## [1.14.0] - 2025-03-20
 
diff --git a/Packages/com.unity.inputsystem/InputSystem/Plugins/InputForUI/InputSystemProvider.cs b/Packages/com.unity.inputsystem/InputSystem/Plugins/InputForUI/InputSystemProvider.cs
index 98dec05a6b..f5e9d7382d 100644
--- a/Packages/com.unity.inputsystem/InputSystem/Plugins/InputForUI/InputSystemProvider.cs
+++ b/Packages/com.unity.inputsystem/InputSystem/Plugins/InputForUI/InputSystemProvider.cs
@@ -365,6 +365,11 @@ EventSource GetEventSource(InputDevice device)
             if (device is Gamepad)
                 return EventSource.Gamepad;
 
+#if UNITY_INPUT_SYSTEM_TRACKEDDEVICE_EVENTSOURCE
+            if (device is TrackedDevice)
+                return EventSource.TrackedDevice;
+#endif
+
             return EventSource.Unspecified;
         }
 
diff --git a/Packages/com.unity.inputsystem/InputSystem/Unity.InputSystem.asmdef b/Packages/com.unity.inputsystem/InputSystem/Unity.InputSystem.asmdef
index cbf773a654..b9a1c81fa6 100644
--- a/Packages/com.unity.inputsystem/InputSystem/Unity.InputSystem.asmdef
+++ b/Packages/com.unity.inputsystem/InputSystem/Unity.InputSystem.asmdef
@@ -107,6 +107,11 @@
             "expression": "6000.0.15",
             "define": "UNITY_INPUT_SYSTEM_SENDPOINTERHOVERTOPARENT"
         },
+        {
+            "name": "Unity",
+            "expression": "6000.2.0a5",
+            "define": "UNITY_INPUT_SYSTEM_TRACKEDDEVICE_EVENTSOURCE"
+        },
         {
             "name": "com.unity.modules.unityanalytics",
             "expression": "1",