diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9e2e7225..dc22f281 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.1)
 
 project(pono)
 
diff --git a/tests/CMakeLists.txt.in b/tests/CMakeLists.txt.in
index f0bae470..03761ebe 100644
--- a/tests/CMakeLists.txt.in
+++ b/tests/CMakeLists.txt.in
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.1)
 
 project(googletest-download NONE)