diff --git a/devel/msgpack-cxx/files/patch-CMakeLists.txt b/devel/msgpack-cxx/files/patch-CMakeLists.txt
new file mode 100644
index 000000000000..410359e3a954
--- /dev/null
+++ b/devel/msgpack-cxx/files/patch-CMakeLists.txt
@@ -0,0 +1,8 @@
+--- CMakeLists.txt.orig	2026-09-18 23:29:57 UTC
++++ CMakeLists.txt
+@@ -1,4 +1,4 @@
+-CMAKE_MINIMUM_REQUIRED (VERSION 3.1 FATAL_ERROR)
++CMAKE_MINIMUM_REQUIRED (VERSION 3.5 FATAL_ERROR)
+ 
+ CMAKE_POLICY (SET CMP0054 NEW)
+