diff --git a/.gitignore b/.gitignore
index 18a6650..51165ff 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,3 +30,4 @@ chewing-editor.dSYM/
 chewing-editor.app/
 
 Testing/
+/build/
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 079cab0..b40db72 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,7 +19,7 @@
 set(CMAKE_USER_MAKE_RULES_OVERRIDE	${CMAKE_CURRENT_SOURCE_DIR}/cmake/c_flag_overrides.cmake)
 set(CMAKE_USER_MAKE_RULES_OVERRIDE_CXX	${CMAKE_CURRENT_SOURCE_DIR}/cmake/cxx_flag_overrides.cmake)
 
-cmake_minimum_required(VERSION 3.0.0)
+cmake_minimum_required(VERSION 3.0.0...3.31.6)
 project(chewing-editor VERSION 0.1.1)
 
 cmake_policy(SET CMP0020 NEW)