diff --git a/meta-oe/recipes-connectivity/gammu/gammu/0001-allow-build-with-cmake-4.patch b/meta-oe/recipes-connectivity/gammu/gammu/0001-allow-build-with-cmake-4.patch
new file mode 100644
index 0000000000..5ab63b809f
--- /dev/null
+++ b/meta-oe/recipes-connectivity/gammu/gammu/0001-allow-build-with-cmake-4.patch
@@ -0,0 +1,43 @@
+From ea068ac152b9b375be51611ca04d0f833e2f6856 Mon Sep 17 00:00:00 2001
+From: Alper Ak <alperyasinak1@gmail.com>
+Date: Tue, 8 Jul 2025 22:52:11 +0300
+Subject: [PATCH] cmake: Set minimum required version to 3.5 for CMake 4+
+ compatibility
+
+Fix:
+
+| CMake Error at CMakeLists.txt:5 (cmake_minimum_required):
+|   Compatibility with CMake < 3.5 has been removed from CMake.
+|
+|   Update the VERSION argument <min> value.  Or, use the <min>...<max> syntax
+|   to tell CMake that the project requires at least <min> but has been updated
+|   to work with policies introduced by <max> or earlier.
+|
+|   Or, add -DCMAKE_POLICY_VERSION_MINIMUM=3.5 to try configuring anyway.
+|
+|
+| -- Configuring incomplete, errors occurred!
+
+Upstream-Status: Pending
+
+Signed-off-by: Alper Ak <alperyasinak1@gmail.com>
+---
+ CMakeLists.txt | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index d0a79b3..23dba35 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -2,7 +2,7 @@
+ # Copyright (c) 2007 - 2018 Michal Cihar
+ # vim: expandtab sw=4 ts=4 sts=4:
+ 
+-cmake_minimum_required (VERSION 3.0)
++cmake_minimum_required (VERSION 3.5)
+ INCLUDE (CMakeForceCompiler)
+ 
+ project (Gammu C)
+-- 
+2.43.0
+
diff --git a/meta-oe/recipes-connectivity/gammu/gammu_1.42.0.bb b/meta-oe/recipes-connectivity/gammu/gammu_1.42.0.bb
index e6ec9c3573..353ee37f46 100644
--- a/meta-oe/recipes-connectivity/gammu/gammu_1.42.0.bb
+++ b/meta-oe/recipes-connectivity/gammu/gammu_1.42.0.bb
@@ -7,6 +7,7 @@ HOMEPAGE = "https://wammu.eu/"
 SRC_URI = "https://dl.cihar.com/${BPN}/releases/${BP}.tar.xz \
     file://gammurc \
     file://gammu-smsdrc \
+    file://0001-allow-build-with-cmake-4.patch \
 "
 
 SRC_URI[sha256sum] = "d8f152314d7e4d3d643610d742845e0a016ce97c234ad4b1151574e1b09651ee"