diff --git a/.github/workflows/scorecard.yml b/.github/workflows/scorecard.yml
index 13d77a7..32f223d 100644
--- a/.github/workflows/scorecard.yml
+++ b/.github/workflows/scorecard.yml
@@ -47,7 +47,7 @@ jobs:
       # Upload the results as artifacts (optional). Commenting out will disable uploads of run results in SARIF
       # format to the repository Actions tab.
       - name: "Upload artifact"
-        uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
+        uses: actions/upload-artifact@65c4c4a1ddee5b72f698fdd19549f0f0fb45cf08 # v4.6.0
         with:
           name: SARIF file
           path: results.sarif
@@ -55,6 +55,6 @@ jobs:
 
       # Upload the results to GitHub's code scanning dashboard.
       - name: "Upload to code-scanning"
-        uses: github/codeql-action/upload-sarif@662472033e021d55d94146f66f6058822b0b39fd # v3.27.0
+        uses: github/codeql-action/upload-sarif@dd746615b3b9d728a6a37ca2045b68ca76d4841a # v3.28.8
         with:
           sarif_file: results.sarif
diff --git a/include/magic_enum/magic_enum.hpp b/include/magic_enum/magic_enum.hpp
index 158207e..7491fae 100644
--- a/include/magic_enum/magic_enum.hpp
+++ b/include/magic_enum/magic_enum.hpp
@@ -621,26 +621,37 @@ constexpr auto enum_name() noexcept {
 template <typename E, E V>
 inline constexpr auto enum_name_v = enum_name<E, V>();
 
+// CWG1766: Values outside the range of the values of an enumeration
+// https://reviews.llvm.org/D130058, https://reviews.llvm.org/D131307
+#if defined(__clang__) && __clang_major__ >= 16
+template <typename E, auto V, typename = void>
+inline constexpr bool is_enum_constexpr_static_cast_valid = false;
+template <typename E, auto V>
+inline constexpr bool is_enum_constexpr_static_cast_valid<E, V, std::void_t<std::integral_constant<E, static_cast<E>(V)>>> = true;
+#else
+template <typename, auto>
+inline constexpr bool is_enum_constexpr_static_cast_valid = true;
+#endif
+
 template <typename E, auto V>
 constexpr bool is_valid() noexcept {
-#if defined(__clang__) && __clang_major__ >= 16
-  // https://reviews.llvm.org/D130058, https://reviews.llvm.org/D131307
-  constexpr E v = __builtin_bit_cast(E, V);
-#else
-  constexpr E v = static_cast<E>(V);
-#endif
-  [[maybe_unused]] constexpr auto custom = customize::enum_name<E>(v);
-  static_assert(std::is_same_v<std::decay_t<decltype(custom)>, customize::customize_t>, "magic_enum::customize requires customize_t type.");
-  if constexpr (custom.first == customize::detail::customize_tag::custom_tag) {
-    constexpr auto name = custom.second;
-    static_assert(!name.empty(), "magic_enum::customize requires not empty string.");
-    return name.size() != 0;
-  } else if constexpr (custom.first == customize::detail::customize_tag::default_tag) {
+  if constexpr (is_enum_constexpr_static_cast_valid<E, V>) {
+    constexpr E v = static_cast<E>(V);
+    [[maybe_unused]] constexpr auto custom = customize::enum_name<E>(v);
+    static_assert(std::is_same_v<std::decay_t<decltype(custom)>, customize::customize_t>, "magic_enum::customize requires customize_t type.");
+    if constexpr (custom.first == customize::detail::customize_tag::custom_tag) {
+      constexpr auto name = custom.second;
+      static_assert(!name.empty(), "magic_enum::customize requires not empty string.");
+      return name.size() != 0;
+    } else if constexpr (custom.first == customize::detail::customize_tag::default_tag) {
 #if defined(MAGIC_ENUM_VS_2017_WORKAROUND)
-    return n<E, v>().size_ != 0;
+      return n<E, v>().size_ != 0;
 #else
-    return n<v>().size_ != 0;
+      return n<v>().size_ != 0;
 #endif
+    } else {
+      return false;
+    }
   } else {
     return false;
   }
diff --git a/include/magic_enum/magic_enum_containers.hpp b/include/magic_enum/magic_enum_containers.hpp
index f817306..9a0208a 100644
--- a/include/magic_enum/magic_enum_containers.hpp
+++ b/include/magic_enum/magic_enum_containers.hpp
@@ -52,10 +52,10 @@ namespace magic_enum::containers {
 namespace detail {
 
 template <typename T, typename = void>
-static constexpr bool is_transparent_v{};
+inline constexpr bool is_transparent_v{};
 
 template <typename T>
-static constexpr bool is_transparent_v<T, std::void_t<typename T::is_transparent>>{true};
+inline constexpr bool is_transparent_v<T, std::void_t<typename T::is_transparent>>{true};
 
 template <typename Eq = std::equal_to<>, typename T1, typename T2>
 constexpr bool equal(T1&& t1, T2&& t2, Eq&& eq = {}) {
diff --git a/include/magic_enum/magic_enum_format.hpp b/include/magic_enum/magic_enum_format.hpp
index 4997589..eadceec 100644
--- a/include/magic_enum/magic_enum_format.hpp
+++ b/include/magic_enum/magic_enum_format.hpp
@@ -35,44 +35,35 @@
 #include "magic_enum.hpp"
 #include "magic_enum_flags.hpp"
 
-#if !defined(MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT)
-#  define MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT 1
-#  define MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT_AUTO_DEFINE
-#endif
+namespace magic_enum::detail {
 
-namespace magic_enum::customize {
-  // customize enum to enable/disable automatic std::format
-  template <typename E>
-  constexpr bool enum_format_enabled() noexcept {
-    return MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT;
+template <typename E, std::enable_if_t<std::is_enum_v<std::decay_t<E>>, int> = 0>
+std::string format_as(E e) {
+  using D = std::decay_t<E>;
+  static_assert(std::is_same_v<char, magic_enum::string_view::value_type>, "magic_enum::formatter requires string_view::value_type type same as char.");
+  if constexpr (magic_enum::detail::supported<D>::value) {
+    if constexpr (magic_enum::detail::subtype_v<D> == magic_enum::detail::enum_subtype::flags) {
+      if (const auto name = magic_enum::enum_flags_name<D>(e); !name.empty()) {
+        return {name.data(), name.size()};
+      }
+    } else {
+      if (const auto name = magic_enum::enum_name<D>(e); !name.empty()) {
+        return {name.data(), name.size()};
+      }
+    }
   }
-} // magic_enum::customize
+  return std::to_string(magic_enum::enum_integer<D>(e));
+}
+
+} // namespace magic_enum::format
 
 #if defined(__cpp_lib_format)
 
-#ifndef MAGIC_ENUM_USE_STD_MODULE
-#include <format>
-#endif
-
 template <typename E>
-struct std::formatter<E, std::enable_if_t<std::is_enum_v<std::decay_t<E>> && magic_enum::customize::enum_format_enabled<E>(), char>> : std::formatter<std::string_view, char> {
+struct std::formatter<E, std::enable_if_t<std::is_enum_v<std::decay_t<E>>, char>> : std::formatter<std::string_view, char> {
   template <class FormatContext>
   auto format(E e, FormatContext& ctx) const {
-    static_assert(std::is_same_v<char, string_view::value_type>, "formatter requires string_view::value_type type same as char.");
-    using D = std::decay_t<E>;
-
-    if constexpr (magic_enum::detail::supported<D>::value) {
-      if constexpr (magic_enum::detail::subtype_v<D> == magic_enum::detail::enum_subtype::flags) {
-        if (const auto name = magic_enum::enum_flags_name<D>(e); !name.empty()) {
-          return formatter<std::string_view, char>::format(std::string_view{name.data(), name.size()}, ctx);
-        }
-      } else {
-        if (const auto name = magic_enum::enum_name<D>(e); !name.empty()) {
-          return formatter<std::string_view, char>::format(std::string_view{name.data(), name.size()}, ctx);
-        }
-      }
-    }
-    return formatter<std::string_view, char>::format(std::to_string(magic_enum::enum_integer<D>(e)), ctx);
+    return std::formatter<std::string_view, char>::format(magic_enum::detail::format_as<E>(e), ctx);
   }
 };
 
@@ -80,35 +71,14 @@ struct std::formatter<E, std::enable_if_t<std::is_enum_v<std::decay_t<E>> && mag
 
 #if defined(FMT_VERSION)
 
-#include <fmt/format.h>
-
 template <typename E>
-struct fmt::formatter<E, std::enable_if_t<std::is_enum_v<std::decay_t<E>> && magic_enum::customize::enum_format_enabled<E>(), char>> : fmt::formatter<std::string_view> {
+struct fmt::formatter<E, std::enable_if_t<std::is_enum_v<std::decay_t<E>>, char>> : fmt::formatter<std::string_view, char> {
   template <class FormatContext>
   auto format(E e, FormatContext& ctx) const {
-    static_assert(std::is_same_v<char, string_view::value_type>, "formatter requires string_view::value_type type same as char.");
-    using D = std::decay_t<E>;
-
-    if constexpr (magic_enum::detail::supported<D>::value) {
-      if constexpr (magic_enum::detail::subtype_v<D> == magic_enum::detail::enum_subtype::flags) {
-        if (const auto name = magic_enum::enum_flags_name<D>(e); !name.empty()) {
-          return formatter<std::string_view, char>::format(std::string_view{name.data(), name.size()}, ctx);
-        }
-      } else {
-        if (const auto name = magic_enum::enum_name<D>(e); !name.empty()) {
-          return formatter<std::string_view, char>::format(std::string_view{name.data(), name.size()}, ctx);
-        }
-      }
-    }
-    return formatter<std::string_view, char>::format(std::to_string(magic_enum::enum_integer<D>(e)), ctx);
+    return fmt::formatter<std::string_view, char>::format(magic_enum::detail::format_as<E>(e), ctx);
   }
 };
 
 #endif
 
-#if defined(MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT_AUTO_DEFINE)
-#  undef MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT
-#  undef MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT_AUTO_DEFINE
-#endif
-
 #endif // NEARGYE_MAGIC_ENUM_FORMAT_HPP
diff --git a/test/test.cpp b/test/test.cpp
index ef0459d..9d26eab 100644
--- a/test/test.cpp
+++ b/test/test.cpp
@@ -1176,6 +1176,7 @@ TEST_CASE("multdimensional-switch-case") {
 
 #if defined(__cpp_lib_format)
 
+#include <format>
 #include <magic_enum/magic_enum_format.hpp>
 
 TEST_CASE("format-base") {