diff --git a/CMakeLists.txt b/CMakeLists.txt
index 64a6a51..1ff1e92 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.13)
+cmake_minimum_required(VERSION 3.7.1)
 project(umcumgr C)
 
 set(CMAKE_C_STANDARD 99)