diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9fe733f2..926ba0b7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,10 @@
 # CMakeLists.txt for ELOG project
-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.5)
 project(ELOG)
 
+# C++ version
+set(CMAKE_CXX_STANDARD 17)
+
 # compile options
 option(USE_SSL  "Use OpenSSL library for https" ON)
 option(USE_KRB5 "Use Kerberos library for authentication" OFF)