diff --git a/CMakeLists.txt b/CMakeLists.txt
index dd17367b..3413ea14 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.8.7)
+cmake_minimum_required(VERSION 2.8.7...4.0)
 project(jsonnet C CXX)
 
 include(ExternalProject)
diff --git a/CMakeLists.txt.in b/CMakeLists.txt.in
index 41fac662..7f7d802a 100644
--- a/CMakeLists.txt.in
+++ b/CMakeLists.txt.in
@@ -1,7 +1,7 @@
 # CMake script run a generation-time. This must be separate from the main
 # CMakeLists.txt file to allow downloading and building googletest at generation
 # time.
-cmake_minimum_required(VERSION 2.8.2)
+cmake_minimum_required(VERSION 2.8.2...4.0)
 
 project(googletest-download NONE)