diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8dfaa4e2d80..f19e25d1440 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 3.0)
+cmake_minimum_required (VERSION 3.9)
 project (s2n C)
 
 if(POLICY CMP0077)