diff --git a/asdf.asd b/asdf.asd
index c250c1acf61f6525f7ee6cf17d7539f275cbddd3..46d6eb9c2a947b47416cfc87992f96e74effda2d 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 "2.33.6" ;; to be automatically updated by make bump-version
+  :version "2.33.7" ;; 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 1106dade5db6cd1e71c83f8ec88bcde58cf9433a..2dccb1f356ade447e614941b39120a98f702a280 100644
--- a/header.lisp
+++ b/header.lisp
@@ -1,5 +1,5 @@
 ;;; -*- mode: Common-Lisp; Base: 10 ; Syntax: ANSI-Common-Lisp -*-
-;;; This is ASDF 2.33.6: Another System Definition Facility.
+;;; This is ASDF 2.33.7: Another System Definition Facility.
 ;;;
 ;;; Feedback, bug reports, and patches are all welcome:
 ;;; please mail to <asdf-devel@common-lisp.net>.
diff --git a/uiop/stream.lisp b/uiop/stream.lisp
index 55e14651678c44098fd367b11c735c5ce527282e..8e4727abbc60a197f94bcb11e5eddba101bba397 100644
--- a/uiop/stream.lisp
+++ b/uiop/stream.lisp
@@ -196,7 +196,7 @@ Other keys are accepted but discarded."
                                 &key
                                   (element-type *default-stream-element-type*)
                                   (external-format *utf-8-external-format*)
-                                  (if-exists :rename-and-delete)
+                                  (if-exists :error)
                                   (if-does-not-exist :create))
     "Open FILE for input with given recognizes options, call THUNK with the resulting stream.
 Other keys are accepted but discarded."
diff --git a/upgrade.lisp b/upgrade.lisp
index 8e45faa065adb49039e5a566a3e2fb291af7739a..1f5dc69339dfdf1a21b7a3ec74f801a1a1316058 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 "2.33.6")
+         (asdf-version "2.33.7")
          (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 2b430e1a664e45e25c2b126ae4835eb0cdafc300..b1133b92934a8d1dc40df43692091ed51e14f821 100644
--- a/version.lisp-expr
+++ b/version.lisp-expr
@@ -1 +1 @@
-"2.33.6"
+"2.33.7"