diff --git a/spine-unity/Assets/Spine/Runtime/spine-unity/Components/SkeletonRenderSeparator/SkeletonPartsRenderer.cs b/spine-unity/Assets/Spine/Runtime/spine-unity/Components/SkeletonRenderSeparator/SkeletonPartsRenderer.cs
index c0174ed80..0f4dd07e6 100644
--- a/spine-unity/Assets/Spine/Runtime/spine-unity/Components/SkeletonRenderSeparator/SkeletonPartsRenderer.cs
+++ b/spine-unity/Assets/Spine/Runtime/spine-unity/Components/SkeletonRenderSeparator/SkeletonPartsRenderer.cs
@@ -85,6 +85,10 @@ void LazyIntialize () {
 			}
 		}
 
+		void OnDestroy () {
+			if (buffers != null) buffers.Dispose();
+		}
+
 		public void ClearMesh () {
 			LazyIntialize();
 			meshFilter.sharedMesh = null;
diff --git a/spine-unity/Assets/Spine/package.json b/spine-unity/Assets/Spine/package.json
index d59682f87..98d74ac68 100644
--- a/spine-unity/Assets/Spine/package.json
+++ b/spine-unity/Assets/Spine/package.json
@@ -2,7 +2,7 @@
 	"name": "com.esotericsoftware.spine.spine-unity",
 	"displayName": "spine-unity Runtime",
 	"description": "This plugin provides the spine-unity runtime core.",
-	"version": "4.2.30",
+	"version": "4.2.31",
 	"unity": "2018.3",
 	"author": {
 		"name": "Esoteric Software",