diff --git a/gtsam/3rdparty/cephes/CMakeLists.txt b/gtsam/3rdparty/cephes/CMakeLists.txt
index e840e9e493..9464481602 100644
--- a/gtsam/3rdparty/cephes/CMakeLists.txt
+++ b/gtsam/3rdparty/cephes/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.12)
+cmake_minimum_required(VERSION 3.10)
 enable_testing()
 project(
   cephes