diff --git a/CMakeLists.txt b/CMakeLists.txt
index a3547acf397..652f12b9089 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-cmake_minimum_required (VERSION 3.21)
+cmake_minimum_required (VERSION 3.23)
 
 project (TiFlash LANGUAGES C CXX ASM)
 
diff --git a/README.md b/README.md
index e2e9e2c8c47..9994c5fa23d 100644
--- a/README.md
+++ b/README.md
@@ -36,8 +36,8 @@ And the following operating systems:
 
 The following packages are required:
 
-- CMake 3.21.0+
-- Clang 17.0.0+ under Linux or AppleClang 15.0.0+ under MacOS
+- CMake 3.23.0+
+- Clang 17.0.0+ under Linux or AppleClang 14.0.0+ under MacOS
 - Rust
 - Python 3.0+
 - Ninja-Build or GNU Make