diff --git a/cmake/mimalloc-config-version.cmake b/cmake/mimalloc-config-version.cmake
index 3d94fafc..f3ed36ab 100644
--- a/cmake/mimalloc-config-version.cmake
+++ b/cmake/mimalloc-config-version.cmake
@@ -1,6 +1,6 @@
 set(mi_version_major 2)
 set(mi_version_minor 1)
-set(mi_version_patch 8)
+set(mi_version_patch 9)
 set(mi_version ${mi_version_major}.${mi_version_minor})
 
 set(PACKAGE_VERSION ${mi_version})
diff --git a/include/mimalloc.h b/include/mimalloc.h
index fc6c75fc..bd91db43 100644
--- a/include/mimalloc.h
+++ b/include/mimalloc.h
@@ -1,5 +1,5 @@
 /* ----------------------------------------------------------------------------
-Copyright (c) 2018-2023, Microsoft Research, Daan Leijen
+Copyright (c) 2018-2025, Microsoft Research, Daan Leijen
 This is free software; you can redistribute it and/or modify it under the
 terms of the MIT license. A copy of the license can be found in the file
 "LICENSE" at the root of this distribution.
@@ -8,7 +8,7 @@ terms of the MIT license. A copy of the license can be found in the file
 #ifndef MIMALLOC_H
 #define MIMALLOC_H
 
-#define MI_MALLOC_VERSION 218   // major + 2 digits minor
+#define MI_MALLOC_VERSION 219   // major + 2 digits minor
 
 // ------------------------------------------------------
 // Compiler specific attributes