diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2002800..2de1330 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -27,7 +27,7 @@ endif()
 
 set_property(TARGET argz_argz PROPERTY EXPORT_NAME argz)
 
-target_compile_features(argz_argz INTERFACE cxx_std_17)
+target_compile_features(argz_argz INTERFACE cxx_std_20)
 target_include_directories(
     argz_argz ${warning_guard}
     INTERFACE "$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>"
diff --git a/README.md b/README.md
index ed00c4e..1b1056b 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ A light weight C++ in memory argument parser.
 ## Highlights
 
 * Single header file
-* Requires C++17
+* Requires C++20
 * Less than 200 lines of code
 * Apache 2.0 License
 
diff --git a/include/argz/argz.hpp b/include/argz/argz.hpp
index d002ea6..a3168f2 100644
--- a/include/argz/argz.hpp
+++ b/include/argz/argz.hpp
@@ -132,7 +132,7 @@ namespace argz
       std::cout << '\n';
    }
 
-   template <class int_t, class char_ptr_t, std::enable_if_t<std::is_pointer_v<char_ptr_t>, int> = 0>
+   template <class int_t, class char_ptr_t> requires (std::is_pointer_v<char_ptr_t>)
    inline void parse(about& about, options& opts, const int_t argc, char_ptr_t argv)
    {
       if (argc == 1) {