--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.0...3.6)
 
 PROJECT(bbf C)
 
--- a/bbfdmd/CMakeLists.txt
+++ b/bbfdmd/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.0...3.6)
 
 PROJECT(bbfdmd C)
 
--- a/bbfdmd/ubus/CMakeLists.txt
+++ b/bbfdmd/ubus/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.0...3.6)
 
 PROJECT(bbfdmd)
 
--- a/dm-service/CMakeLists.txt
+++ b/dm-service/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.0...3.6)
 
 PROJECT(dm-service C)
 
--- a/libbbfdm-api/CMakeLists.txt
+++ b/libbbfdm-api/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.0...3.6)
 
 PROJECT(libbbfdm-api)
 
--- a/libbbfdm-api/legacy/CMakeLists.txt
+++ b/libbbfdm-api/legacy/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.0...3.6)
 
 PROJECT(libbbfdm-api-legacy)
 
--- a/libbbfdm-api/version-2/CMakeLists.txt
+++ b/libbbfdm-api/version-2/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.0...3.6)
 
 PROJECT(libbbfdm-api-version-2)
 
--- a/libbbfdm-ubus/CMakeLists.txt
+++ b/libbbfdm-ubus/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.0...3.6)
 
 PROJECT(libbbfdm-ubus)
 
--- a/libbbfdm/CMakeLists.txt
+++ b/libbbfdm/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.0...3.6)
 
 PROJECT(libbbfdm)