diff --git a/CMakeLists.txt b/CMakeLists.txt
index b61a75d5..a0f73997 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -85,6 +85,8 @@ add_subdirectory(xo-ratio)
 add_subdirectory(xo-unit)
 add_subdirectory(xo-pyunit)
 #
+add_subdirectory(xo-alloc)
+#
 add_subdirectory(xo-callback)
 add_subdirectory(xo-webutil)
 add_subdirectory(xo-pywebutil)