diff --git a/CMakeLists.txt b/CMakeLists.txt
index 752ee7a..becc373 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.14)
+cmake_minimum_required(VERSION 3.23)
 
 set(CMAKE_C_STANDARD 99)
 
@@ -10,20 +10,20 @@ project(hmac_sha256 LANGUAGES C CXX)
 option(HMAC_SHA256_TESTS "Build unit tests" FALSE)
 option(HMAC_SHA256_EXAMPLES "Build the examples" FALSE)
 
-add_library(hmac_sha256 STATIC
+add_library(hmac_sha256 STATIC)
+target_sources(hmac_sha256
+  PRIVATE
   ${CMAKE_CURRENT_SOURCE_DIR}/sha256.c
   ${CMAKE_CURRENT_SOURCE_DIR}/hmac_sha256.c
+  PUBLIC FILE_SET HEADERS FILES
+  ${CMAKE_CURRENT_SOURCE_DIR}/sha256.h
+  ${CMAKE_CURRENT_SOURCE_DIR}/hmac_sha256.h
 )
-target_include_directories(hmac_sha256 INTERFACE ${CMAKE_CURRENT_SOURCE_DIR})
 
 install(TARGETS hmac_sha256
-  LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
-  ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
-)
-
-install(FILES
-  ${CMAKE_CURRENT_SOURCE_DIR}/hmac_sha256.h
-  DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
+  LIBRARY DESTINATION           "${CMAKE_INSTALL_LIBDIR}"
+  ARCHIVE DESTINATION           "${CMAKE_INSTALL_LIBDIR}"
+  FILE_SET HEADERS DESTINATION  "${CMAKE_INSTALL_INCLUDEDIR}"
 )
 
 if (HMAC_SHA256_TESTS)