diff --git a/asdf.lisp b/asdf.lisp
index 01bf514f2ed7658ea447066d006b34760120ff67..7858caad65313486fc7717205d917468df8962c3 100644
--- a/asdf.lisp
+++ b/asdf.lisp
@@ -247,7 +247,7 @@
   ;; This parameter isn't actually user-visible
   ;; -- please use the exported function ASDF:ASDF-VERSION below.
   ;; the 1+ hair is to ensure that we don't do an inadvertent find and replace
-  (subseq "VERSION:1.634" (1+ (length "VERSION"))))
+  (subseq "VERSION:1.635" (1+ (length "VERSION"))))
 
 (defun asdf-version ()
   "Exported interface to the version of ASDF currently installed. A string.