diff --git a/docs/source/pcapkit/foundation/engines/engine.rst b/docs/source/pcapkit/foundation/engines/engine.rst
index 99e87b6bdd..a55d049824 100644
--- a/docs/source/pcapkit/foundation/engines/engine.rst
+++ b/docs/source/pcapkit/foundation/engines/engine.rst
@@ -37,7 +37,7 @@ all engine support functionality.
          value can be set by :attr:`__engine_module__` class attribute.
 
    .. property:: registry
-      :type: dict[str, ModuleDescriptor[EngineBase] | Type[EngineBase]]
+      :type: dict[str, ModuleDescriptor[EngineBase] | typing.Type[EngineBase]]
 
       Mapping of engine names to engine classes.
 
diff --git a/docs/source/pcapkit/foundation/reassembly/reassembly.rst b/docs/source/pcapkit/foundation/reassembly/reassembly.rst
index 23c52179fb..1f554af8ae 100644
--- a/docs/source/pcapkit/foundation/reassembly/reassembly.rst
+++ b/docs/source/pcapkit/foundation/reassembly/reassembly.rst
@@ -30,7 +30,7 @@ implements datagram reassembly of IP and TCP packets.
 
 
    .. property:: protocol
-      :type: Type[Protocol]
+      :type: typing.Type[Protocol]
 
       Protocol of current reassembly class.
 
@@ -40,7 +40,7 @@ implements datagram reassembly of IP and TCP packets.
          value can be set by :attr:`__protocol_type__` class attribute.
 
    .. property:: registry
-      :type: dict[str, ModuleDescriptor[ReassemblyBase] | Type[ReassemblyBase]]
+      :type: dict[str, ModuleDescriptor[ReassemblyBase] | typing.Type[ReassemblyBase]]
 
       Mapping of protocol names to reassembly classes.
 
diff --git a/docs/source/pcapkit/foundation/traceflow/traceflow.rst b/docs/source/pcapkit/foundation/traceflow/traceflow.rst
index 6c78081379..1d7f586683 100644
--- a/docs/source/pcapkit/foundation/traceflow/traceflow.rst
+++ b/docs/source/pcapkit/foundation/traceflow/traceflow.rst
@@ -37,7 +37,7 @@ which is an abstract base class for all flow tracing classes.
          value can be set by :attr:`__protocol_type__` class attribute.
 
    .. property:: registry
-      :type: dict[str, ModuleDescriptor[TraceFlowBase] | Type[TraceFlowBase]]
+      :type: dict[str, ModuleDescriptor[TraceFlowBase] | typing.Type[TraceFlowBase]]
 
       Mapping of protocol names to flow tracing classes.