diff --git a/asdf.asd b/asdf.asd
index 3cfeb48c116e97d86ecfd36c3b9ef79144b3f411..417620ef89b018cc1932c1baba15ae2dee43181d 100644
--- a/asdf.asd
+++ b/asdf.asd
@@ -74,7 +74,7 @@
   :licence "MIT"
   :description "Another System Definition Facility"
   :long-description "ASDF builds Common Lisp software organized into defined systems."
-  :version "2.32.31" ;; to be automatically updated by make bump-version
+  :version "2.32.32" ;; to be automatically updated by make bump-version
   :depends-on ()
   #+asdf3 :encoding #+asdf3 :utf-8
   ;; For most purposes, asdf itself specially counts as a builtin system.
diff --git a/header.lisp b/header.lisp
index 36f70c6fbfcf3a3622bc712829bdf1a7c0895937..cfea3759841fe6c54f6afc3988eca72976e7768f 100644
--- a/header.lisp
+++ b/header.lisp
@@ -1,5 +1,5 @@
 ;;; -*- mode: Common-Lisp; Base: 10 ; Syntax: ANSI-Common-Lisp -*-
-;;; This is ASDF 2.32.31: Another System Definition Facility.
+;;; This is ASDF 2.32.32: Another System Definition Facility.
 ;;;
 ;;; Feedback, bug reports, and patches are all welcome:
 ;;; please mail to <asdf-devel@common-lisp.net>.
diff --git a/uiop/filesystem.lisp b/uiop/filesystem.lisp
index 93efe99e2f06748739057484153e9cfc06cf5ddc..6a3c3146f69780091f7eccca21299a6d21dc5d23 100644
--- a/uiop/filesystem.lisp
+++ b/uiop/filesystem.lisp
@@ -557,7 +557,9 @@ If you're suicidal or extremely confident, just use :VALIDATE T."
                               directory-pathname :if-does-not-exist if-does-not-exist)
        #+clozure (ccl:delete-directory directory-pathname)
        #+genera (error "~S not implemented on ~S" 'delete-directory-tree (implementation-type))
-       #+sbcl (sb-ext:delete-directory directory-pathname :recursive t)
+       #+sbcl #.(if-let (dd (find-symbol* :delete-directory :sb-ext nil))
+                  `(,dd directory-pathname :recursive t) ;; requires SBCL 1.0.44 or later
+                  '(error "~S requires SBCL 1.0.44 or later" 'delete-directory-tree))
        ;; Outside Unix or on CMUCL and SCL that can avoid following symlinks,
        ;; do things the hard way.
        #-(or allegro clozure genera sbcl)
diff --git a/upgrade.lisp b/upgrade.lisp
index b2f4302b0c5de2214babe5b5b0902944b8404bb3..ee56d0edcec94cd23ffc57bd6dc6ae1ba3587f21 100644
--- a/upgrade.lisp
+++ b/upgrade.lisp
@@ -52,7 +52,7 @@ You can compare this string with e.g.: (ASDF:VERSION-SATISFIES (ASDF:ASDF-VERSIO
          ;; "3.4.5.67" would be a development version in the official upstream of 3.4.5.
          ;; "3.4.5.0.8" would be your eighth local modification of official release 3.4.5
          ;; "3.4.5.67.8" would be your eighth local modification of development version 3.4.5.67
-         (asdf-version "2.32.31")
+         (asdf-version "2.32.32")
          (existing-version (asdf-version)))
     (setf *asdf-version* asdf-version)
     (when (and existing-version (not (equal asdf-version existing-version)))
diff --git a/version.lisp-expr b/version.lisp-expr
index c1a65a7bfbd1f45edbdee1ba99e6a39227bd64c1..2ce094e763b3b2e71a0566ee8447f93792f30190 100644
--- a/version.lisp-expr
+++ b/version.lisp-expr
@@ -1 +1 @@
-"2.32.31"
+"2.32.32"