diff --git a/README.md b/README.md
index a85761e1..2fa37978 100644
--- a/README.md
+++ b/README.md
@@ -40,7 +40,7 @@ The main features of GQL are:
 * Supports [sync or async usage](https://gql.readthedocs.io/en/latest/async/index.html), [allowing concurrent requests](https://gql.readthedocs.io/en/latest/advanced/async_advanced_usage.html#async-advanced-usage)
 * Supports [File uploads](https://gql.readthedocs.io/en/latest/usage/file_upload.html)
 * Supports [Custom scalars / Enums](https://gql.readthedocs.io/en/latest/usage/custom_scalars_and_enums.html)
-* [gql-cli script](https://gql.readthedocs.io/en/latest/gql-cli/intro.html) to execute GraphQL queries from the command line
+* [gql-cli script](https://gql.readthedocs.io/en/latest/gql-cli/intro.html) to execute GraphQL queries or download schemas from the command line
 * [DSL module](https://gql.readthedocs.io/en/latest/advanced/dsl_module.html) to compose GraphQL queries dynamically
 
 ## Installation
diff --git a/docs/transports/phoenix.rst b/docs/transports/phoenix.rst
index 3b5b9f53..7fb4a90c 100644
--- a/docs/transports/phoenix.rst
+++ b/docs/transports/phoenix.rst
@@ -3,10 +3,13 @@
 PhoenixChannelWebsocketsTransport
 =================================
 
-The PhoenixChannelWebsocketsTransport is an **EXPERIMENTAL** async transport which allows you
+The PhoenixChannelWebsocketsTransport is an async transport which allows you
 to execute queries and subscriptions against an `Absinthe`_ backend using the `Phoenix`_
 framework `channels`_.
 
+Reference:
+:class:`gql.transport.phoenix_channel_websockets.PhoenixChannelWebsocketsTransport`
+
 .. _Absinthe: http://absinthe-graphql.org
 .. _Phoenix: https://www.phoenixframework.org
 .. _channels: https://hexdocs.pm/phoenix/Phoenix.Channel.html#content
diff --git a/gql/client.py b/gql/client.py
index 124cf34b..111a3dd7 100644
--- a/gql/client.py
+++ b/gql/client.py
@@ -315,9 +315,10 @@ def _execute(
         :param variable_values: Dictionary of input parameters.
         :param operation_name: Name of the operation that shall be executed.
         :param serialize_variables: whether the variable values should be
-            serialized. Used for custom scalars and/or enums. Default: False.
+            serialized. Used for custom scalars and/or enums.
+            By default use the serialize_variables argument of the client.
         :param parse_result: Whether gql will unserialize the result.
-            By default use the parse_results attribute of the client.
+            By default use the parse_results argument of the client.
 
         The extra arguments are passed to the transport execute method."""
 
@@ -378,9 +379,10 @@ def execute(
         :param variable_values: Dictionary of input parameters.
         :param operation_name: Name of the operation that shall be executed.
         :param serialize_variables: whether the variable values should be
-            serialized. Used for custom scalars and/or enums. Default: False.
+            serialized. Used for custom scalars and/or enums.
+            By default use the serialize_variables argument of the client.
         :param parse_result: Whether gql will unserialize the result.
-            By default use the parse_results attribute of the client.
+            By default use the parse_results argument of the client.
         :param get_execution_result: return the full ExecutionResult instance instead of
             only the "data" field. Necessary if you want to get the "extensions" field.
 
@@ -462,9 +464,10 @@ async def _subscribe(
         :param variable_values: Dictionary of input parameters.
         :param operation_name: Name of the operation that shall be executed.
         :param serialize_variables: whether the variable values should be
-            serialized. Used for custom scalars and/or enums. Default: False.
+            serialized. Used for custom scalars and/or enums.
+            By default use the serialize_variables argument of the client.
         :param parse_result: Whether gql will unserialize the result.
-            By default use the parse_results attribute of the client.
+            By default use the parse_results argument of the client.
 
         The extra arguments are passed to the transport subscribe method."""
 
@@ -539,9 +542,10 @@ async def subscribe(
         :param variable_values: Dictionary of input parameters.
         :param operation_name: Name of the operation that shall be executed.
         :param serialize_variables: whether the variable values should be
-            serialized. Used for custom scalars and/or enums. Default: False.
+            serialized. Used for custom scalars and/or enums.
+            By default use the serialize_variables argument of the client.
         :param parse_result: Whether gql will unserialize the result.
-            By default use the parse_results attribute of the client.
+            By default use the parse_results argument of the client.
         :param get_execution_result: yield the full ExecutionResult instance instead of
             only the "data" field. Necessary if you want to get the "extensions" field.
 
@@ -598,9 +602,10 @@ async def _execute(
         :param variable_values: Dictionary of input parameters.
         :param operation_name: Name of the operation that shall be executed.
         :param serialize_variables: whether the variable values should be
-            serialized. Used for custom scalars and/or enums. Default: False.
+            serialized. Used for custom scalars and/or enums.
+            By default use the serialize_variables argument of the client.
         :param parse_result: Whether gql will unserialize the result.
-            By default use the parse_results attribute of the client.
+            By default use the parse_results argument of the client.
 
         The extra arguments are passed to the transport execute method."""
 
@@ -665,9 +670,10 @@ async def execute(
         :param variable_values: Dictionary of input parameters.
         :param operation_name: Name of the operation that shall be executed.
         :param serialize_variables: whether the variable values should be
-            serialized. Used for custom scalars and/or enums. Default: False.
+            serialized. Used for custom scalars and/or enums.
+            By default use the serialize_variables argument of the client.
         :param parse_result: Whether gql will unserialize the result.
-            By default use the parse_results attribute of the client.
+            By default use the parse_results argument of the client.
         :param get_execution_result: return the full ExecutionResult instance instead of
             only the "data" field. Necessary if you want to get the "extensions" field.
 
diff --git a/gql/transport/phoenix_channel_websockets.py b/gql/transport/phoenix_channel_websockets.py
index 56d35f8b..b750c39c 100644
--- a/gql/transport/phoenix_channel_websockets.py
+++ b/gql/transport/phoenix_channel_websockets.py
@@ -25,7 +25,7 @@ def __init__(self, query_id: int) -> None:
 
 
 class PhoenixChannelWebsocketsTransport(WebsocketsTransport):
-    """The PhoenixChannelWebsocketsTransport is an **EXPERIMENTAL** async transport
+    """The PhoenixChannelWebsocketsTransport is an async transport
     which allows you to execute queries and subscriptions against an `Absinthe`_
     backend using the `Phoenix`_ framework `channels`_.