diff --git a/src/changelog.lisp b/src/changelog.lisp
index e90c118..21327bd 100644
--- a/src/changelog.lisp
+++ b/src/changelog.lisp
@@ -153,6 +153,8 @@
                               "CLEAN-URLS"
                               ;; These objects are not documented yet:
                               "40ANTS-DOC/COMMONDOC/XREF:XREF"))
+  (0.17.3 2024-05-15
+          "* Update 4")
   (0.17.3 2024-05-15
           "* Update 3")
   (0.17.3 2024-05-15