diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7a13eeb..34ded2b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,15 +1,9 @@
-cmake_minimum_required (VERSION 2.8.11)
+cmake_minimum_required (VERSION 3.22)
 project (mraa C)
 
 FIND_PACKAGE (Threads REQUIRED)
 
-if (CMAKE_VERSION VERSION_LESS "3.1")
-  if (CMAKE_C_COMPILER_ID STREQUAL "GNU")
-    set (CMAKE_C_FLAGS "-std=gnu99 ${CMAKE_C_FLAGS}")
-  endif ()
-else ()
-  set (CMAKE_C_STANDARD 99)
-endif ()
+set (CMAKE_C_STANDARD 99)
 
 option (BUILDCPP "Enable C++ (needed by FTDI4222 and tests)" ON)