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diff --git a/src/third-party/scnlib/include/scn/ranges/std_impl.h b/src/third-party/scnlib/include/scn/ranges/std_impl.h
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+// Copyright 2017 Elias Kosunen
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// This file is a part of scnlib:
+//     https://github.com/eliaskosunen/scnlib
+
+#ifndef SCN_RANGES_STD_IMPL_H
+#define SCN_RANGES_STD_IMPL_H
+
+#include "../detail/config.h"
+
+#if SCN_HAS_CONCEPTS && SCN_HAS_RANGES
+
+SCN_GCC_PUSH
+SCN_GCC_IGNORE("-Wnoexcept")
+#include <iterator>
+#include <ranges>
+SCN_GCC_POP
+
+#include "util.h"
+
+#include "../util/string_view.h"
+
+namespace scn {
+    SCN_BEGIN_NAMESPACE
+
+    namespace std_ranges = ::std::ranges;
+
+    namespace polyfill_2a {
+        template <typename T>
+        using iter_value_t = ::std::iter_value_t<T>;
+        template <typename T>
+        using iter_reference_t = ::std::iter_reference_t<T>;
+        template <typename T>
+        using iter_difference_t = ::std::iter_difference_t<T>;
+
+        template <typename I>
+        concept bidirectional_iterator = std::bidirectional_iterator<I>;
+        template <typename I>
+        concept random_access_iterator = std::random_access_iterator<I>;
+    }  // namespace polyfill_2a
+
+    SCN_END_NAMESPACE
+}  // namespace scn
+
+namespace std::ranges {
+    template <typename CharT>
+    inline constexpr bool enable_view<::scn::basic_string_view<CharT>> = true;
+    template <typename T>
+    inline constexpr bool enable_view<::scn::span<T>> = true;
+}  // namespace std
+
+#define SCN_CHECK_CONCEPT(C) C
+#endif
+
+#endif  // SCN_RANGES_STD_IMPL_H