diff --git a/math/flann/files/patch-CMakeLists.txt b/math/flann/files/patch-CMakeLists.txt
new file mode 100644
index 000000000000..d4bb958af751
--- /dev/null
+++ b/math/flann/files/patch-CMakeLists.txt
@@ -0,0 +1,8 @@
+--- CMakeLists.txt.orig	2026-09-11 15:04:11 UTC
++++ CMakeLists.txt
+@@ -1,4 +1,4 @@
+-cmake_minimum_required(VERSION 2.6)
++cmake_minimum_required(VERSION 3.5)
+ 
+ if(COMMAND cmake_policy)
+     cmake_policy(SET CMP0003 NEW)