diff --git a/cdecl-18.3.tar.gz b/cdecl-18.3.tar.gz
deleted file mode 100644
index 3652ad7..0000000
--- a/cdecl-18.3.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:2fe9b590c7eab1dd88aecbe8ca0ae1daeda89b5c01aa3eb7ae4a1481a08554be
-size 1587366
diff --git a/cdecl-18.4.tar.gz b/cdecl-18.4.tar.gz
new file mode 100644
index 0000000..8ed4e16
--- /dev/null
+++ b/cdecl-18.4.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e041194a766edde10c44db2cb18ad200afbfdb052118de8174fde273315c851c
+size 1599181
diff --git a/cdecl.changes b/cdecl.changes
index a0fa4e5..c8db242 100644
--- a/cdecl.changes
+++ b/cdecl.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Tue Sep  3 17:39:26 UTC 2024 - Jan Engelhardt <jengelh@inai.de>
+
+- Update to release 18.4
+  * Initial support for C++26 has been added, specifically =
+    delete("reason") is now supported.
+  * Support placemarkers for empty macro argument.
+
 -------------------------------------------------------------------
 Thu Aug 15 17:44:37 UTC 2024 - Jan Engelhardt <jengelh@inai.de>
 
diff --git a/cdecl.spec b/cdecl.spec
index de01266..9ba364a 100644
--- a/cdecl.spec
+++ b/cdecl.spec
@@ -17,7 +17,7 @@
 
 
 Name:           cdecl
-Version:        18.3
+Version:        18.4
 Release:        0
 Summary:        C/C++ function declaration translator
 License:        GPL-3.0-or-later