diff --git a/VertexMitchellNetravaliHeightMap/VertexMitchellNetravaliHeightMap-0.3.ckan b/VertexMitchellNetravaliHeightMap/VertexMitchellNetravaliHeightMap-0.3.ckan
index 496da8ddd0..660b2cd70f 100644
--- a/VertexMitchellNetravaliHeightMap/VertexMitchellNetravaliHeightMap-0.3.ckan
+++ b/VertexMitchellNetravaliHeightMap/VertexMitchellNetravaliHeightMap-0.3.ckan
@@ -1,5 +1,5 @@
 {
-    "spec_version": "v1.18",
+    "spec_version": "v1.4",
     "identifier": "VertexMitchellNetravaliHeightMap",
     "name": "Vertex Mitchell-Netravali Filtered Heightmap",
     "abstract": "KSP PQS Heightmap mod that uses Mitchell-Netravali Interpolation",