diff --git a/CHANGES.md b/CHANGES.md
index 8e723da441..23b07833ce 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -9,6 +9,7 @@ Features
 --------
 * [#1313](https://github.com/java-native-access/jna/issues/1313): Normalize `RESOURCE_PREFIX` for darwin to `darwin-$arch` and split jnidispatch library per architecture - [@matthiasblaesing](https://github.com/matthiasblaesing).
 * [#1318](https://github.com/java-native-access/jna/pull/1318): Add support for linux-risc64 - [@thentschel](https://github.com/thentschel).
+* [#1327](https://github.com/java-native-access/jna/pull/1327): Add partial support for future values of `c.s.j.p.win32.WinNT.LOGICAL_PROCESSOR_RELATIONSHIP` enum present in Windows Insider builds - [@dbwiddis](https://github.com/dbwiddis).
 
 Bug Fixes
 ---------
diff --git a/contrib/platform/src/com/sun/jna/platform/win32/WinNT.java b/contrib/platform/src/com/sun/jna/platform/win32/WinNT.java
index 2a28d33a3b..2475d6ed0a 100644
--- a/contrib/platform/src/com/sun/jna/platform/win32/WinNT.java
+++ b/contrib/platform/src/com/sun/jna/platform/win32/WinNT.java
@@ -32,7 +32,6 @@
 import com.sun.jna.PointerType;
 import com.sun.jna.Structure;
 import com.sun.jna.Structure.FieldOrder;
-import com.sun.jna.platform.win32.WinNT.PSID;
 import com.sun.jna.Union;
 import com.sun.jna.ptr.ByReference;
 import com.sun.jna.win32.StdCallLibrary.StdCallCallback;
@@ -3030,7 +3029,7 @@ public static SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX fromPointer(Pointer memory
                     result = new GROUP_RELATIONSHIP(memory);
                     break;
                 default:
-                    throw new IllegalStateException("Unmapped relationship: " + relationship);
+                    result = new UNKNOWN_RELATIONSHIP(memory);
             }
             result.read();
             return result;
@@ -3253,6 +3252,24 @@ public void read() {
         }
     }
 
+    /**
+     * Represents information associated with a
+     * {@link LOGICAL_PROCESSOR_RELATIONSHIP} enum value which has not yet been
+     * mapped. Only the fields from {@link SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX}
+     * are populated.
+     */
+    @FieldOrder({})
+    public static class UNKNOWN_RELATIONSHIP extends SYSTEM_LOGICAL_PROCESSOR_INFORMATION_EX {
+
+        public UNKNOWN_RELATIONSHIP() {
+            super();
+        }
+
+        public UNKNOWN_RELATIONSHIP(Pointer memory) {
+            super(memory);
+        }
+    }
+
     /**
      * Represents a processor group-specific affinity, such as the affinity of a
      * thread.
@@ -3359,6 +3376,30 @@ public interface LOGICAL_PROCESSOR_RELATIONSHIP {
          */
         int RelationGroup = 4;
 
+        /**
+         * <p>
+         * Upcoming value of this enum added for forward compatibility. Documentation
+         * will be added when available.
+         * </p>
+         */
+        int RelationProcessorDie = 5;
+
+        /**
+         * <p>
+         * Upcoming value of this enum added for forward compatibility. Documentation
+         * will be added when available.
+         * </p>
+         */
+        int RelationNumaNodeEx = 6;
+
+        /**
+         * <p>
+         * Upcoming value of this enum added for forward compatibility. Documentation
+         * will be added when available.
+         * </p>
+         */
+        int RelationProcessorModule = 7;
+
         /**
          * <p>On input, retrieves information about all possible relation types. This value is not used on output.</p>
          *