diff --git a/CHANGES_NEXT_RELEASE b/CHANGES_NEXT_RELEASE
index c3acdc183d..134c80ddc9 100644
--- a/CHANGES_NEXT_RELEASE
+++ b/CHANGES_NEXT_RELEASE
@@ -4,3 +4,4 @@
 - Fix: use null for non existing attributes in macro substitution applied to "paylaod" field (instead of empty string) to make behaviour more consistent (#4004)
 - Fix: simplified GET /version operation, without including "libversions" field (add ?options=libVersions to get it)
 - Fix: lighter operation to get databases list from MongoDB (#4517)
+- Hardening: compile code using C++14 standard
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0118dbef19..472316166e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -26,6 +26,10 @@ PROJECT(contextBroker)
 # find_package() for mongo driver doesn't work with cmake 2
 cmake_minimum_required(VERSION 3.0)
 
+# set C++14 standard
+set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
 #
 # DEBUG or RELEASE build ?
 #