diff --git a/numcu/CMakeLists.txt b/numcu/CMakeLists.txt
index 3622fff..9fe1a6c 100644
--- a/numcu/CMakeLists.txt
+++ b/numcu/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.24 FATAL_ERROR)
 if(NOT DEFINED SKBUILD_PROJECT_VERSION)
-  set(SKBUILD_PROJECT_VERSION 0 CACHE STRING "version" FORCE)
+  set(SKBUILD_PROJECT_VERSION 1 CACHE STRING "version" FORCE)
 endif()
 string(REGEX REPLACE [[([0-9]+)\.([0-9]+)\.([0-9]+).*]] [[\1.\2.\3]] SKBUILD_PROJECT_VERSION "${SKBUILD_PROJECT_VERSION}")
 project(numcu LANGUAGES C CXX VERSION "${SKBUILD_PROJECT_VERSION}")