diff --git a/cl_dll/CMakeLists.txt b/cl_dll/CMakeLists.txt
index 45c24b91..b88821a2 100644
--- a/cl_dll/CMakeLists.txt
+++ b/cl_dll/CMakeLists.txt
@@ -20,7 +20,7 @@
 # SOFTWARE.
 #
 
-cmake_minimum_required(VERSION 2.8.12)
+cmake_minimum_required(VERSION 3.9)
 project (CLDLL)
 
 set (CLDLL_LIBRARY client)
diff --git a/dlls/CMakeLists.txt b/dlls/CMakeLists.txt
index 7e5378e1..638f1a73 100644
--- a/dlls/CMakeLists.txt
+++ b/dlls/CMakeLists.txt
@@ -20,7 +20,7 @@
 # SOFTWARE.
 #
 
-cmake_minimum_required(VERSION 2.8.12)
+cmake_minimum_required(VERSION 3.9)
 project (SVDLL)
 
 set (SVDLL_LIBRARY server)