diff --git a/xpcom/components/Module.h b/xpcom/components/Module.h
index 751f2a6fb4e..479b333618a 100644
--- a/xpcom/components/Module.h
+++ b/xpcom/components/Module.h
@@ -53,7 +53,7 @@ namespace mozilla {
  */
 struct Module
 {
-  static const unsigned int kVersion = 8;
+  static const unsigned int kVersion = 9;
 
   struct CIDEntry;