diff --git a/BuildingBlocker/BuildingBlocker-v0.1.0.ckan b/BuildingBlocker/BuildingBlocker-v0.1.0.ckan
index fff8d0d7fe..384b761909 100644
--- a/BuildingBlocker/BuildingBlocker-v0.1.0.ckan
+++ b/BuildingBlocker/BuildingBlocker-v0.1.0.ckan
@@ -1,5 +1,5 @@
 {
-    "spec_version": "v1.4",
+    "spec_version": 1,
     "identifier": "BuildingBlocker",
     "name": "Building Blocker",
     "abstract": "Hide unused space center buildings in the sandbox and science game modes",