diff --git a/CMakeLists.txt b/CMakeLists.txt
index 21fa5cb8..25dbfc4f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,7 +16,7 @@
 # limitations under the License.
 #
 
-cmake_minimum_required(VERSION 3.15.6)
+cmake_minimum_required(VERSION 3.21)
 set(CMSIS_OPTIMIZATION_LEVEL
     "-Ofast"
     CACHE STRING "Compiler optimization level.")
diff --git a/Tests/UnitTest/CMakeLists.txt b/Tests/UnitTest/CMakeLists.txt
index 53b8bdfb..901729cc 100644
--- a/Tests/UnitTest/CMakeLists.txt
+++ b/Tests/UnitTest/CMakeLists.txt
@@ -16,7 +16,7 @@
 # limitations under the License.
 #
 
-cmake_minimum_required(VERSION 3.15.6)
+cmake_minimum_required(VERSION 3.21)
 
 project(cmsis_nn_unit_tests VERSION 0.0.1)