diff --git a/Singularity/Singularity-0.991.ckan b/Singularity/Singularity-0.991.ckan
index 283dbaf93f..a80ba28cb3 100644
--- a/Singularity/Singularity-0.991.ckan
+++ b/Singularity/Singularity-0.991.ckan
@@ -1,5 +1,5 @@
 {
-    "spec_version": "v1.4",
+    "spec_version": 1,
     "identifier": "Singularity",
     "name": "Singularity",
     "abstract": "Black hole shaders for KSP",