diff --git a/CMakeLists.txt b/CMakeLists.txt
index 10885827fcecfa797357fa5baf00833bfdd22763..5f4b855a8d23a15023726d905a1c0740ea4235e7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.15)
 include(CheckSymbolExists)
 
 if(NOT CMAKE_BUILD_TYPE)
diff --git a/README.md b/README.md
index 70b9f2f96453163836937093f825f93ac38c8a0d..51c39f07967954f9680d8b10a26aa791e697411a 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,7 @@ mechanism supports that use case too (i.e. `/usr/bin/zig` and `/usr/lib/zig/`).
 
 Ensure you have the required dependencies:
 
- * CMake >= 3.5
+ * CMake >= 3.15
  * System C/C++ Toolchain
  * LLVM, Clang, LLD development libraries == 18.x