diff --git a/cmake/mimalloc-config-version.cmake b/cmake/mimalloc-config-version.cmake
index f92d52e6..49cc7660 100644
--- a/cmake/mimalloc-config-version.cmake
+++ b/cmake/mimalloc-config-version.cmake
@@ -1,6 +1,6 @@
 set(mi_version_major 1)
 set(mi_version_minor 8)
-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 95a76c2d..6d9eb4fc 100644
--- a/include/mimalloc.h
+++ b/include/mimalloc.h
@@ -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 188   // major + 2 digits minor
+#define MI_MALLOC_VERSION 189   // major + 2 digits minor
 
 // ------------------------------------------------------
 // Compiler specific attributes