diff --git a/asdf.lisp b/asdf.lisp
index ca76297ba9437b26a54e7428952f212571beb6dd..eb09f2a5209680d579e1fb4660a5b54f771c90f8 100644
--- a/asdf.lisp
+++ b/asdf.lisp
@@ -187,7 +187,7 @@
 ;;;;
 (defparameter *asdf-version*
   ;; the 1+ hair is to ensure that we don't do an inadvertent find and replace
-  (subseq "VERSION:1.605" (1+ (length "VERSION"))))
+  (subseq "VERSION:1.606" (1+ (length "VERSION"))))
 
 (defun asdf-version ()
   *asdf-version*)