diff --git a/interface/other b/interface/other
index 64b09422d..993c9d4f6 100644
--- a/interface/other
+++ b/interface/other
@@ -2,6 +2,7 @@ Source
 	compilation: Compilation
 	hash: Byte*
 	api: SourceAPI
+	apiHash: Int
 
 SourceAPI
 	packages : Package*