diff --git a/cdecl-10.0.tar.gz b/cdecl-10.0.tar.gz
new file mode 100644
index 0000000..c5b7408
--- /dev/null
+++ b/cdecl-10.0.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:85c0d1259033fc11f5139b5e0ab90d65fa9fb97deeaee81a268fdbdc4288fbdb
+size 1090433
diff --git a/cdecl-9.10.tar.gz b/cdecl-9.10.tar.gz
deleted file mode 100644
index f70fba1..0000000
--- a/cdecl-9.10.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:87d1b6032da1463aa36d4e884a73681eb6035ce81d6743c5c8cab37532414663
-size 1067101
diff --git a/cdecl.changes b/cdecl.changes
index 785934f..1d45a24 100644
--- a/cdecl.changes
+++ b/cdecl.changes
@@ -1,3 +1,12 @@
+-------------------------------------------------------------------
+Thu May 27 10:07:59 UTC 2021 - Jan Engelhardt <jengelh@inai.de>
+
+- Update to release 10.0
+  * cdecl now recognizes "asm" just to say it's not supported.
+  * Improved operator<=> now checks for usable return type.
+  * Default relational operators in C++20 are now supported.
+  * C++'s raw string literals R"delim(...)delim" are now supported.
+
 -------------------------------------------------------------------
 Thu Apr 29 18:33:26 UTC 2021 - Jan Engelhardt <jengelh@inai.de>
 
diff --git a/cdecl.spec b/cdecl.spec
index 277c949..449907b 100644
--- a/cdecl.spec
+++ b/cdecl.spec
@@ -17,7 +17,7 @@
 
 
 Name:           cdecl
-Version:        9.10
+Version:        10.0
 Release:        0
 Summary:        C/C++ function declaration translator
 License:        GPL-3.0-or-later