diff --git a/src/socketio/async_client.py b/src/socketio/async_client.py
index c1ec14f..fc7ce3f 100644
--- a/src/socketio/async_client.py
+++ b/src/socketio/async_client.py
@@ -45,6 +45,9 @@ class AsyncClient(base_client.BaseClient):
                           leave interrupt handling to the calling application.
                           Interrupt handling can only be enabled when the
                           client instance is created in the main thread.
+    :param serializer_args: A mapping of additional parameters to pass to 
+                            the serializer. The content of this dictionary
+                            depends on the selected serialization method.
 
     The Engine.IO configuration supports the following settings:
 
diff --git a/src/socketio/async_server.py b/src/socketio/async_server.py
index 5b896bf..9bdfca4 100644
--- a/src/socketio/async_server.py
+++ b/src/socketio/async_server.py
@@ -50,6 +50,9 @@ class AsyncServer(base_server.BaseServer):
                        default is `['/']`, which always accepts connections to
                        the default namespace. Set to `'*'` to accept all
                        namespaces.
+    :param serializer_args: A mapping of additional parameters to pass to 
+                            the serializer. The content of this dictionary
+                            depends on the selected serialization method.
     :param kwargs: Connection parameters for the underlying Engine.IO server.
 
     The Engine.IO configuration supports the following settings:
diff --git a/src/socketio/client.py b/src/socketio/client.py
index 296e4dc..7be92cc 100644
--- a/src/socketio/client.py
+++ b/src/socketio/client.py
@@ -48,6 +48,9 @@ class Client(base_client.BaseClient):
                           leave interrupt handling to the calling application.
                           Interrupt handling can only be enabled when the
                           client instance is created in the main thread.
+    :param serializer_args: A mapping of additional parameters to pass to 
+                            the serializer. The content of this dictionary
+                            depends on the selected serialization method.
 
     The Engine.IO configuration supports the following settings:
 
diff --git a/src/socketio/server.py b/src/socketio/server.py
index 21d6afe..1658fa5 100644
--- a/src/socketio/server.py
+++ b/src/socketio/server.py
@@ -53,6 +53,9 @@ class Server(base_server.BaseServer):
                        default is `['/']`, which always accepts connections to
                        the default namespace. Set to `'*'` to accept all
                        namespaces.
+    :param serializer_args: A mapping of additional parameters to pass to 
+                            the serializer. The content of this dictionary
+                            depends on the selected serialization method.
     :param kwargs: Connection parameters for the underlying Engine.IO server.
 
     The Engine.IO configuration supports the following settings: