diff --git a/Chapter11/signal_generator/CMakeLists.txt b/Chapter11/signal_generator/CMakeLists.txt
index 80b7a66..3ead124 100644
--- a/Chapter11/signal_generator/CMakeLists.txt
+++ b/Chapter11/signal_generator/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0.0)
+cmake_minimum_required(VERSION 3.13)
 
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)