diff --git a/lib/omnibus/project.rb b/lib/omnibus/project.rb
index 577b6802b..520e75341 100644
--- a/lib/omnibus/project.rb
+++ b/lib/omnibus/project.rb
@@ -82,6 +82,7 @@ def initialize(filepath = nil, manifest = nil)
       @manifest = manifest
       @package_summary = {}
       @skip_healthcheck = false
+      @disable_version_manifest = false
     end
 
     #