diff --git a/MarkIVSpaceplaneSystem/MarkIVSpaceplaneSystem-3.1.1.ckan b/MarkIVSpaceplaneSystem/MarkIVSpaceplaneSystem-3.1.1.ckan
index dc0fc92af1..0b3d2e26da 100644
--- a/MarkIVSpaceplaneSystem/MarkIVSpaceplaneSystem-3.1.1.ckan
+++ b/MarkIVSpaceplaneSystem/MarkIVSpaceplaneSystem-3.1.1.ckan
@@ -64,5 +64,6 @@
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     },
     "download_content_type": "application/zip",
+    "release_date": "2020-02-21T00:09:06.758433+00:00",
     "x_generated_by": "netkan"
 }