diff --git a/headers/meta.hpp/meta_binds.hpp b/headers/meta.hpp/meta_binds.hpp
index 0ad21b2..cb1bddc 100644
--- a/headers/meta.hpp/meta_binds.hpp
+++ b/headers/meta.hpp/meta_binds.hpp
@@ -9,6 +9,9 @@
 #include "meta_base.hpp"
 #include "meta_states.hpp"
 
+#include "meta_detail/state_registry.hpp"
+#include "meta_detail/type_registry.hpp"
+
 namespace meta_hpp::detail
 {
     template < typename Class, typename... Args >
@@ -85,6 +88,7 @@ namespace meta_hpp
         operator array_type() const noexcept;
     private:
         detail::array_type_data_ptr data_;
+        detail::type_registry::locker locker_;
     };
 }
 
@@ -212,6 +216,7 @@ namespace meta_hpp
             Policy = Policy{});
     private:
         detail::class_type_data_ptr data_;
+        detail::type_registry::locker locker_;
     };
 }
 
@@ -227,6 +232,7 @@ namespace meta_hpp
         enum_bind& evalue_(std::string name, Enum value, evalue_opts opts);
     private:
         detail::enum_type_data_ptr data_;
+        detail::type_registry::locker locker_;
     };
 }
 
@@ -239,6 +245,7 @@ namespace meta_hpp
         operator function_type() const noexcept;
     private:
         detail::function_type_data_ptr data_;
+        detail::type_registry::locker locker_;
     };
 }
 
@@ -251,6 +258,7 @@ namespace meta_hpp
         operator member_type() const noexcept;
     private:
         detail::member_type_data_ptr data_;
+        detail::type_registry::locker locker_;
     };
 }
 
@@ -263,6 +271,7 @@ namespace meta_hpp
         operator method_type() const noexcept;
     private:
         detail::method_type_data_ptr data_;
+        detail::type_registry::locker locker_;
     };
 }
 
@@ -275,6 +284,7 @@ namespace meta_hpp
         operator nullptr_type() const noexcept;
     private:
         detail::nullptr_type_data_ptr data_;
+        detail::type_registry::locker locker_;
     };
 }
 
@@ -287,6 +297,7 @@ namespace meta_hpp
         operator number_type() const noexcept;
     private:
         detail::number_type_data_ptr data_;
+        detail::type_registry::locker locker_;
     };
 }
 
@@ -299,6 +310,7 @@ namespace meta_hpp
         operator pointer_type() const noexcept;
     private:
         detail::pointer_type_data_ptr data_;
+        detail::type_registry::locker locker_;
     };
 }
 
@@ -311,6 +323,7 @@ namespace meta_hpp
         operator reference_type() const noexcept;
     private:
         detail::reference_type_data_ptr data_;
+        detail::type_registry::locker locker_;
     };
 }
 
@@ -323,6 +336,7 @@ namespace meta_hpp
         operator void_type() const noexcept;
     private:
         detail::void_type_data_ptr data_;
+        detail::type_registry::locker locker_;
     };
 }
 
@@ -386,6 +400,7 @@ namespace meta_hpp
             Policy = Policy{});
     private:
         detail::scope_state_ptr state_;
+        detail::state_registry::locker locker_;
     };
 }
 
diff --git a/headers/meta.hpp/meta_detail/state_registry.hpp b/headers/meta.hpp/meta_detail/state_registry.hpp
index c17f3e0..077c6ec 100644
--- a/headers/meta.hpp/meta_detail/state_registry.hpp
+++ b/headers/meta.hpp/meta_detail/state_registry.hpp
@@ -19,7 +19,7 @@ namespace meta_hpp::detail
         }
 
         [[nodiscard]] scope get_scope_by_name(std::string_view name) const noexcept {
-            const std::lock_guard<std::mutex> lock{mutex_};
+            const locker lock;
 
             if ( auto iter = scopes_.find(name); iter != scopes_.end() ) {
                 return iter->second;
@@ -29,7 +29,7 @@ namespace meta_hpp::detail
         }
 
         [[nodiscard]] scope resolve_scope(std::string_view name) {
-            const std::lock_guard<std::mutex> lock{mutex_};
+            const locker lock;
 
             if ( auto iter = scopes_.find(name); iter != scopes_.end() ) {
                 return iter->second;
@@ -38,10 +38,18 @@ namespace meta_hpp::detail
             auto state = scope_state::make(std::string{name}, metadata_map{});
             return scopes_.emplace(std::string{name}, std::move(state)).first->second;
         }
+    public:
+        class locker : noncopyable {
+        public:
+            explicit locker()
+            : lock_{instance().mutex_} {}
+        private:
+            std::lock_guard<std::recursive_mutex> lock_;
+        };
     private:
         state_registry() = default;
     private:
-        mutable std::mutex mutex_;
+        std::recursive_mutex mutex_;
         std::map<std::string, scope, std::less<>> scopes_;
     };
 }
diff --git a/headers/meta.hpp/meta_detail/type_registry.hpp b/headers/meta.hpp/meta_detail/type_registry.hpp
index d7a59e1..b20ef51 100644
--- a/headers/meta.hpp/meta_detail/type_registry.hpp
+++ b/headers/meta.hpp/meta_detail/type_registry.hpp
@@ -19,7 +19,7 @@ namespace meta_hpp::detail
         }
 
         [[nodiscard]] any_type get_type_by_id(type_id id) const noexcept {
-            const std::lock_guard<std::mutex> lock{mutex_};
+            const locker lock;
 
             if ( auto iter = type_by_id_.find(id); iter != type_by_id_.end() ) {
                 return iter->second;
@@ -29,7 +29,7 @@ namespace meta_hpp::detail
         }
 
         [[nodiscard]] any_type get_type_by_rtti(const std::type_index& index) const noexcept {
-            const std::lock_guard<std::mutex> lock{mutex_};
+            const locker lock;
 
             if ( auto iter = type_by_rtti_.find(index); iter != type_by_rtti_.end() ) {
                 return iter->second;
@@ -199,6 +199,14 @@ namespace meta_hpp::detail
             static void_type_data_ptr data{std::make_shared<void_type_data>(type_list<Void>{})};
             return ensure_type<Void>(data);
         }
+    public:
+        class locker : noncopyable {
+        public:
+            explicit locker()
+            : lock_{instance().mutex_} {}
+        private:
+            std::lock_guard<std::recursive_mutex> lock_;
+        };
     private:
         type_registry() = default;
 
@@ -206,7 +214,7 @@ namespace meta_hpp::detail
         TypeData ensure_type(const TypeData& type_data) {
             static std::once_flag init_flag{};
             std::call_once(init_flag, [this, &type_data](){
-                const std::lock_guard<std::mutex> lock{mutex_};
+                const locker lock;
                 type_by_id_[type_data->id] = any_type{type_data};
             #ifndef META_HPP_NO_RTTI
                 type_by_rtti_[typeid(Type)] = any_type{type_data};
@@ -215,7 +223,7 @@ namespace meta_hpp::detail
             return type_data;
         }
     private:
-        mutable std::mutex mutex_;
+        std::recursive_mutex mutex_;
         std::map<type_id, any_type, std::less<>> type_by_id_;
         std::map<std::type_index, any_type, std::less<>> type_by_rtti_;
     };