--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,26 +3,12 @@
 project(ImageLOL VERSION 0.0)
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED True)
-include_directories("External/zlib" "External/libpng")
 add_subdirectory("External/stb_image-cmake")

-set(SKIP_INSTALL_ALL ON CACHE BOOL "")
-add_subdirectory("External/zlib-no-examples")
-
-set(PNG_BUILD_ZLIB ON CACHE BOOL "")
-link_libraries(zlibstatic)
-get_target_property(ZLIB_INCLUDE_DIRECTORIES zlibstatic INCLUDE_DIRECTORIES)
-include_directories(${ZLIB_INCLUDE_DIRECTORIES})
-set(ZLIB_INCLUDE_DIR ${ZLIB_INCLUDE_DIRECTORIES} CACHE PATH "")
-set(PNG_SHARED OFF CACHE BOOL "")
-set(PNG_EXECUTABLES OFF CACHE BOOL "")
-add_subdirectory("External/libpng")
-add_dependencies(png_static zlibstatic zlib)
-add_dependencies(genfiles zlibstatic)
-unset(SKIP_INSTALL_ALL CACHE)
-get_target_property(LIBPNG_INCLUDE_DIRECTORIES png_static INCLUDE_DIRECTORIES)
+find_package(PNG REQUIRED)
+set(LIBPNG_INCLUDE_DIRECTORIES ${PNG_INCLUDE_DIRS})

 add_subdirectory("imagelol")
 add_executable(ImageLOL main.cpp)
 target_include_directories(ImageLOL PRIVATE ${LIBPNG_INCLUDE_DIRECTORIES})
-target_link_libraries(ImageLOL PRIVATE stb_image png_static zlibstatic libimagelol)
+target_link_libraries(ImageLOL PRIVATE stb_image PNG::PNG libimagelol)