diff --git a/.clang-tidy b/.clang-tidy
index 6bcd36d6e..63e2902ef 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -5,6 +5,7 @@ Checks: '*,
          -cppcoreguidelines-avoid-non-const-global-variables,
          -cppcoreguidelines-macro-usage,
          -cppcoreguidelines-pro-bounds-array-to-pointer-decay,
+         -cppcoreguidelines-pro-type-reinterpret-cast,
          -cppcoreguidelines-pro-type-union-access,
          -fuchsia-default-arguments-calls,
          -fuchsia-default-arguments-declarations,
@@ -26,6 +27,7 @@ Checks: '*,
          -modernize-use-trailing-return-type,
          -readability-function-size,
          -readability-magic-numbers,
+         -readability-redundant-access-specifiers,
          -readability-uppercase-literal-suffix,
          -llvmlibc-*'
 
diff --git a/cmake/ci.cmake b/cmake/ci.cmake
index 7d83aa3d6..433f4f1f7 100644
--- a/cmake/ci.cmake
+++ b/cmake/ci.cmake
@@ -463,7 +463,7 @@ add_custom_target(ci_cppcheck
 ###############################################################################
 
 add_custom_target(ci_cpplint
-    COMMAND ${Python3_EXECUTABLE} ${CMAKE_SOURCE_DIR}/third_party/cpplint/cpplint.py --filter=-whitespace,-legal,-runtime/references,-runtime/explicit,-runtime/indentation_namespace,-readability/casting --quiet --recursive ${SRC_FILES}
+    COMMAND ${Python3_EXECUTABLE} ${CMAKE_SOURCE_DIR}/third_party/cpplint/cpplint.py --filter=-whitespace,-legal,-runtime/references,-runtime/explicit,-runtime/indentation_namespace,-readability/casting,-readability/nolint --quiet --recursive ${SRC_FILES}
     COMMENT "Check code with cpplint"
 )
 
diff --git a/include/nlohmann/detail/exceptions.hpp b/include/nlohmann/detail/exceptions.hpp
index dd92897d5..d310d795c 100644
--- a/include/nlohmann/detail/exceptions.hpp
+++ b/include/nlohmann/detail/exceptions.hpp
@@ -54,7 +54,7 @@ class exception : public std::exception
     }
 
     /// the id of the exception
-    const int id;
+    const int id; // NOLINT(cppcoreguidelines-non-private-member-variables-in-classes)
 
   protected:
     JSON_HEDLEY_NON_NULL(3)
diff --git a/include/nlohmann/detail/input/binary_reader.hpp b/include/nlohmann/detail/input/binary_reader.hpp
index bfe18a0fb..a245e88fd 100644
--- a/include/nlohmann/detail/input/binary_reader.hpp
+++ b/include/nlohmann/detail/input/binary_reader.hpp
@@ -78,9 +78,9 @@ class binary_reader
 
     // make class move-only
     binary_reader(const binary_reader&) = delete;
-    binary_reader(binary_reader&&) = default;
+    binary_reader(binary_reader&&) noexcept = default;
     binary_reader& operator=(const binary_reader&) = delete;
-    binary_reader& operator=(binary_reader&&) = default;
+    binary_reader& operator=(binary_reader&&) noexcept = default;
     ~binary_reader() = default;
 
     /*!
@@ -315,7 +315,7 @@ class binary_reader
             default: // anything else not supported (yet)
             {
                 std::array<char, 3> cr{{}};
-                (std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(element_type));
+                (std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(element_type)); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
                 return sax->parse_error(element_type_parse_position, std::string(cr.data()), parse_error::create(114, element_type_parse_position, "Unsupported BSON record type 0x" + std::string(cr.data())));
             }
         }
diff --git a/include/nlohmann/detail/input/json_sax.hpp b/include/nlohmann/detail/input/json_sax.hpp
index c41493d6d..a7ad2abca 100644
--- a/include/nlohmann/detail/input/json_sax.hpp
+++ b/include/nlohmann/detail/input/json_sax.hpp
@@ -166,9 +166,9 @@ class json_sax_dom_parser
 
     // make class move-only
     json_sax_dom_parser(const json_sax_dom_parser&) = delete;
-    json_sax_dom_parser(json_sax_dom_parser&&) = default;
+    json_sax_dom_parser(json_sax_dom_parser&&) noexcept = default;
     json_sax_dom_parser& operator=(const json_sax_dom_parser&) = delete;
-    json_sax_dom_parser& operator=(json_sax_dom_parser&&) = default;
+    json_sax_dom_parser& operator=(json_sax_dom_parser&&) noexcept = default;
     ~json_sax_dom_parser() = default;
 
     bool null()
@@ -341,9 +341,9 @@ class json_sax_dom_callback_parser
 
     // make class move-only
     json_sax_dom_callback_parser(const json_sax_dom_callback_parser&) = delete;
-    json_sax_dom_callback_parser(json_sax_dom_callback_parser&&) = default;
+    json_sax_dom_callback_parser(json_sax_dom_callback_parser&&) noexcept = default;
     json_sax_dom_callback_parser& operator=(const json_sax_dom_callback_parser&) = delete;
-    json_sax_dom_callback_parser& operator=(json_sax_dom_callback_parser&&) = default;
+    json_sax_dom_callback_parser& operator=(json_sax_dom_callback_parser&&) noexcept = default;
     ~json_sax_dom_callback_parser() = default;
 
     bool null()
diff --git a/include/nlohmann/detail/input/lexer.hpp b/include/nlohmann/detail/input/lexer.hpp
index eae82eaa3..c2141ed26 100644
--- a/include/nlohmann/detail/input/lexer.hpp
+++ b/include/nlohmann/detail/input/lexer.hpp
@@ -120,9 +120,9 @@ class lexer : public lexer_base<BasicJsonType>
 
     // delete because of pointer members
     lexer(const lexer&) = delete;
-    lexer(lexer&&) = default;
+    lexer(lexer&&) noexcept = default;
     lexer& operator=(lexer&) = delete;
-    lexer& operator=(lexer&&) = default;
+    lexer& operator=(lexer&&) noexcept = default;
     ~lexer() = default;
 
   private:
diff --git a/include/nlohmann/detail/output/serializer.hpp b/include/nlohmann/detail/output/serializer.hpp
index 0a34c8011..ab155ecb6 100644
--- a/include/nlohmann/detail/output/serializer.hpp
+++ b/include/nlohmann/detail/output/serializer.hpp
@@ -379,7 +379,7 @@ class serializer
     */
     void dump_escaped(const string_t& s, const bool ensure_ascii)
     {
-        std::uint32_t codepoint;
+        std::uint32_t codepoint{};
         std::uint8_t state = UTF8_ACCEPT;
         std::size_t bytes = 0;  // number of bytes written to string_buffer
 
@@ -700,12 +700,12 @@ class serializer
         }
 
         // use a pointer to fill the buffer
-        auto buffer_ptr = number_buffer.begin();
+        auto* buffer_ptr = number_buffer.begin();
 
         const bool is_negative = std::is_same<NumberType, number_integer_t>::value && !(x >= 0); // see issue #755
         number_unsigned_t abs_value;
 
-        unsigned int n_chars;
+        unsigned int n_chars{};
 
         if (is_negative)
         {
@@ -805,8 +805,8 @@ class serializer
         // erase thousands separator
         if (thousands_sep != '\0')
         {
-            const auto end = std::remove(number_buffer.begin(),
-                                         number_buffer.begin() + len, thousands_sep);
+            auto* const end = std::remove(number_buffer.begin(),
+                                          number_buffer.begin() + len, thousands_sep);
             std::fill(end, number_buffer.end(), '\0');
             JSON_ASSERT((end - number_buffer.begin()) <= len);
             len = (end - number_buffer.begin());
@@ -815,7 +815,7 @@ class serializer
         // convert decimal point to '.'
         if (decimal_point != '\0' && decimal_point != '.')
         {
-            const auto dec_pos = std::find(number_buffer.begin(), number_buffer.end(), decimal_point);
+            auto* const dec_pos = std::find(number_buffer.begin(), number_buffer.end(), decimal_point);
             if (dec_pos != number_buffer.end())
             {
                 *dec_pos = '.';
diff --git a/include/nlohmann/json.hpp b/include/nlohmann/json.hpp
index bf40e95db..e5304a779 100644
--- a/include/nlohmann/json.hpp
+++ b/include/nlohmann/json.hpp
@@ -6201,7 +6201,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator==(const_reference lhs, const ScalarType rhs) noexcept
+    friend bool operator==(const_reference lhs, ScalarType rhs) noexcept
     {
         return lhs == basic_json(rhs);
     }
@@ -6212,7 +6212,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator==(const ScalarType lhs, const_reference rhs) noexcept
+    friend bool operator==(ScalarType lhs, const_reference rhs) noexcept
     {
         return basic_json(lhs) == rhs;
     }
@@ -6246,7 +6246,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator!=(const_reference lhs, const ScalarType rhs) noexcept
+    friend bool operator!=(const_reference lhs, ScalarType rhs) noexcept
     {
         return lhs != basic_json(rhs);
     }
@@ -6257,7 +6257,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator!=(const ScalarType lhs, const_reference rhs) noexcept
+    friend bool operator!=(ScalarType lhs, const_reference rhs) noexcept
     {
         return basic_json(lhs) != rhs;
     }
@@ -6367,7 +6367,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator<(const_reference lhs, const ScalarType rhs) noexcept
+    friend bool operator<(const_reference lhs, ScalarType rhs) noexcept
     {
         return lhs < basic_json(rhs);
     }
@@ -6378,7 +6378,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator<(const ScalarType lhs, const_reference rhs) noexcept
+    friend bool operator<(ScalarType lhs, const_reference rhs) noexcept
     {
         return basic_json(lhs) < rhs;
     }
@@ -6413,7 +6413,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator<=(const_reference lhs, const ScalarType rhs) noexcept
+    friend bool operator<=(const_reference lhs, ScalarType rhs) noexcept
     {
         return lhs <= basic_json(rhs);
     }
@@ -6424,7 +6424,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator<=(const ScalarType lhs, const_reference rhs) noexcept
+    friend bool operator<=(ScalarType lhs, const_reference rhs) noexcept
     {
         return basic_json(lhs) <= rhs;
     }
@@ -6459,7 +6459,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator>(const_reference lhs, const ScalarType rhs) noexcept
+    friend bool operator>(const_reference lhs, ScalarType rhs) noexcept
     {
         return lhs > basic_json(rhs);
     }
@@ -6470,7 +6470,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator>(const ScalarType lhs, const_reference rhs) noexcept
+    friend bool operator>(ScalarType lhs, const_reference rhs) noexcept
     {
         return basic_json(lhs) > rhs;
     }
@@ -6505,7 +6505,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator>=(const_reference lhs, const ScalarType rhs) noexcept
+    friend bool operator>=(const_reference lhs, ScalarType rhs) noexcept
     {
         return lhs >= basic_json(rhs);
     }
@@ -6516,7 +6516,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator>=(const ScalarType lhs, const_reference rhs) noexcept
+    friend bool operator>=(ScalarType lhs, const_reference rhs) noexcept
     {
         return basic_json(lhs) >= rhs;
     }
diff --git a/single_include/nlohmann/json.hpp b/single_include/nlohmann/json.hpp
index 8b3ede008..e82501475 100644
--- a/single_include/nlohmann/json.hpp
+++ b/single_include/nlohmann/json.hpp
@@ -2423,7 +2423,7 @@ class exception : public std::exception
     }
 
     /// the id of the exception
-    const int id;
+    const int id; // NOLINT(cppcoreguidelines-non-private-member-variables-in-classes)
 
   protected:
     JSON_HEDLEY_NON_NULL(3)
@@ -3643,7 +3643,7 @@ void from_json(const BasicJsonType& j, std::valarray<T>& l)
 }
 
 template<typename BasicJsonType, typename T, std::size_t N>
-auto from_json(const BasicJsonType& j, T (&arr)[N])
+auto from_json(const BasicJsonType& j, T (&arr)[N]) // NOLINT(cppcoreguidelines-avoid-c-arrays,hicpp-avoid-c-arrays,modernize-avoid-c-arrays)
 -> decltype(j.template get<T>(), void())
 {
     for (std::size_t i = 0; i < N; ++i)
@@ -5453,9 +5453,9 @@ class json_sax_dom_parser
 
     // make class move-only
     json_sax_dom_parser(const json_sax_dom_parser&) = delete;
-    json_sax_dom_parser(json_sax_dom_parser&&) = default;
+    json_sax_dom_parser(json_sax_dom_parser&&) noexcept = default;
     json_sax_dom_parser& operator=(const json_sax_dom_parser&) = delete;
-    json_sax_dom_parser& operator=(json_sax_dom_parser&&) = default;
+    json_sax_dom_parser& operator=(json_sax_dom_parser&&) noexcept = default;
     ~json_sax_dom_parser() = default;
 
     bool null()
@@ -5628,9 +5628,9 @@ class json_sax_dom_callback_parser
 
     // make class move-only
     json_sax_dom_callback_parser(const json_sax_dom_callback_parser&) = delete;
-    json_sax_dom_callback_parser(json_sax_dom_callback_parser&&) = default;
+    json_sax_dom_callback_parser(json_sax_dom_callback_parser&&) noexcept = default;
     json_sax_dom_callback_parser& operator=(const json_sax_dom_callback_parser&) = delete;
-    json_sax_dom_callback_parser& operator=(json_sax_dom_callback_parser&&) = default;
+    json_sax_dom_callback_parser& operator=(json_sax_dom_callback_parser&&) noexcept = default;
     ~json_sax_dom_callback_parser() = default;
 
     bool null()
@@ -6107,9 +6107,9 @@ class lexer : public lexer_base<BasicJsonType>
 
     // delete because of pointer members
     lexer(const lexer&) = delete;
-    lexer(lexer&&) = default;
+    lexer(lexer&&) noexcept = default;
     lexer& operator=(lexer&) = delete;
-    lexer& operator=(lexer&&) = default;
+    lexer& operator=(lexer&&) noexcept = default;
     ~lexer() = default;
 
   private:
@@ -7824,9 +7824,9 @@ class binary_reader
 
     // make class move-only
     binary_reader(const binary_reader&) = delete;
-    binary_reader(binary_reader&&) = default;
+    binary_reader(binary_reader&&) noexcept = default;
     binary_reader& operator=(const binary_reader&) = delete;
-    binary_reader& operator=(binary_reader&&) = default;
+    binary_reader& operator=(binary_reader&&) noexcept = default;
     ~binary_reader() = default;
 
     /*!
@@ -8061,7 +8061,7 @@ class binary_reader
             default: // anything else not supported (yet)
             {
                 std::array<char, 3> cr{{}};
-                (std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(element_type));
+                (std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(element_type)); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
                 return sax->parse_error(element_type_parse_position, std::string(cr.data()), parse_error::create(114, element_type_parse_position, "Unsupported BSON record type 0x" + std::string(cr.data())));
             }
         }
@@ -12671,7 +12671,7 @@ class json_ref
     {}
 
     // class should be movable only
-    json_ref(json_ref&&) = default;
+    json_ref(json_ref&&) noexcept = default;
     json_ref(const json_ref&) = delete;
     json_ref& operator=(const json_ref&) = delete;
     json_ref& operator=(json_ref&&) = delete;
@@ -15927,7 +15927,7 @@ class serializer
     */
     void dump_escaped(const string_t& s, const bool ensure_ascii)
     {
-        std::uint32_t codepoint;
+        std::uint32_t codepoint{};
         std::uint8_t state = UTF8_ACCEPT;
         std::size_t bytes = 0;  // number of bytes written to string_buffer
 
@@ -16248,12 +16248,12 @@ class serializer
         }
 
         // use a pointer to fill the buffer
-        auto buffer_ptr = number_buffer.begin();
+        auto* buffer_ptr = number_buffer.begin();
 
         const bool is_negative = std::is_same<NumberType, number_integer_t>::value && !(x >= 0); // see issue #755
         number_unsigned_t abs_value;
 
-        unsigned int n_chars;
+        unsigned int n_chars{};
 
         if (is_negative)
         {
@@ -16353,8 +16353,8 @@ class serializer
         // erase thousands separator
         if (thousands_sep != '\0')
         {
-            const auto end = std::remove(number_buffer.begin(),
-                                         number_buffer.begin() + len, thousands_sep);
+            auto* const end = std::remove(number_buffer.begin(),
+                                          number_buffer.begin() + len, thousands_sep);
             std::fill(end, number_buffer.end(), '\0');
             JSON_ASSERT((end - number_buffer.begin()) <= len);
             len = (end - number_buffer.begin());
@@ -16363,7 +16363,7 @@ class serializer
         // convert decimal point to '.'
         if (decimal_point != '\0' && decimal_point != '.')
         {
-            const auto dec_pos = std::find(number_buffer.begin(), number_buffer.end(), decimal_point);
+            auto* const dec_pos = std::find(number_buffer.begin(), number_buffer.end(), decimal_point);
             if (dec_pos != number_buffer.end())
             {
                 *dec_pos = '.';
@@ -22822,7 +22822,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator==(const_reference lhs, const ScalarType rhs) noexcept
+    friend bool operator==(const_reference lhs, ScalarType rhs) noexcept
     {
         return lhs == basic_json(rhs);
     }
@@ -22833,7 +22833,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator==(const ScalarType lhs, const_reference rhs) noexcept
+    friend bool operator==(ScalarType lhs, const_reference rhs) noexcept
     {
         return basic_json(lhs) == rhs;
     }
@@ -22867,7 +22867,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator!=(const_reference lhs, const ScalarType rhs) noexcept
+    friend bool operator!=(const_reference lhs, ScalarType rhs) noexcept
     {
         return lhs != basic_json(rhs);
     }
@@ -22878,7 +22878,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator!=(const ScalarType lhs, const_reference rhs) noexcept
+    friend bool operator!=(ScalarType lhs, const_reference rhs) noexcept
     {
         return basic_json(lhs) != rhs;
     }
@@ -22988,7 +22988,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator<(const_reference lhs, const ScalarType rhs) noexcept
+    friend bool operator<(const_reference lhs, ScalarType rhs) noexcept
     {
         return lhs < basic_json(rhs);
     }
@@ -22999,7 +22999,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator<(const ScalarType lhs, const_reference rhs) noexcept
+    friend bool operator<(ScalarType lhs, const_reference rhs) noexcept
     {
         return basic_json(lhs) < rhs;
     }
@@ -23034,7 +23034,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator<=(const_reference lhs, const ScalarType rhs) noexcept
+    friend bool operator<=(const_reference lhs, ScalarType rhs) noexcept
     {
         return lhs <= basic_json(rhs);
     }
@@ -23045,7 +23045,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator<=(const ScalarType lhs, const_reference rhs) noexcept
+    friend bool operator<=(ScalarType lhs, const_reference rhs) noexcept
     {
         return basic_json(lhs) <= rhs;
     }
@@ -23080,7 +23080,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator>(const_reference lhs, const ScalarType rhs) noexcept
+    friend bool operator>(const_reference lhs, ScalarType rhs) noexcept
     {
         return lhs > basic_json(rhs);
     }
@@ -23091,7 +23091,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator>(const ScalarType lhs, const_reference rhs) noexcept
+    friend bool operator>(ScalarType lhs, const_reference rhs) noexcept
     {
         return basic_json(lhs) > rhs;
     }
@@ -23126,7 +23126,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator>=(const_reference lhs, const ScalarType rhs) noexcept
+    friend bool operator>=(const_reference lhs, ScalarType rhs) noexcept
     {
         return lhs >= basic_json(rhs);
     }
@@ -23137,7 +23137,7 @@ class basic_json
     */
     template<typename ScalarType, typename std::enable_if<
                  std::is_scalar<ScalarType>::value, int>::type = 0>
-    friend bool operator>=(const ScalarType lhs, const_reference rhs) noexcept
+    friend bool operator>=(ScalarType lhs, const_reference rhs) noexcept
     {
         return basic_json(lhs) >= rhs;
     }