diff --git a/CHANGES.md b/CHANGES.md
index 8f6c4bf6..ea5b8a53 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -6,6 +6,24 @@ list](https://github.com/trinodb/trino-python-client/tags), the
 [README](https://github.com/trinodb/trino-python-client/blob/master/README.md)
 and the [PyPI page](https://pypi.org/project/trino/).
 
+
+## Release 0.334.0
+
+* Allow authentication over insecure channel.
+   ([#530](https://github.com/trinodb/trino-python-client/pull/530))
+* Add support for `with` statement with `Cursor` class.
+   ([#537](https://github.com/trinodb/trino-python-client/pull/537))
+* Fix `KeyError` when accessing missing `error_location` in `TrinoQueryError`.
+   ([#535](https://github.com/trinodb/trino-python-client/pull/535)).
+* Add support for `SET AUTHORIZATION` and `RESET AUTHORIZATION` statements.
+  ([#551](https://github.com/trinodb/trino-python-client/pull/551))
+* Use default TLS port when URI scheme is `https`.
+  ([#549](https://github.com/trinodb/trino-python-client/pull/549))
+* Fix redirect URI not getting printed during OAuth authentication when using terminals that buffer output.
+  ([#548](https://github.com/trinodb/trino-python-client/pull/548))
+* Use TLS verification mode set on the connection when retrieving spooled results.
+  ([#546](https://github.com/trinodb/trino-python-client/pull/546))
+
 ## Release 0.333.0
 
 * Improve handling of query results containing `null` values for
diff --git a/tests/unit/test_client.py b/tests/unit/test_client.py
index a9225cd8..909823ee 100644
--- a/tests/unit/test_client.py
+++ b/tests/unit/test_client.py
@@ -135,7 +135,7 @@ def assert_headers(headers):
         assert headers[constants.HEADER_SESSION] == ""
         assert headers[constants.HEADER_TRANSACTION] is None
         assert headers[constants.HEADER_TIMEZONE] == timezone
-        assert headers[constants.HEADER_CLIENT_CAPABILITIES] == "PARAMETRIC_DATETIME,SESSION_AUTHORIZATION"
+        assert headers[constants.HEADER_CLIENT_CAPABILITIES] == constants.CLIENT_CAPABILITIES
         assert headers[accept_encoding_header] == accept_encoding_value
         assert headers[client_info_header] == client_info_value
         assert headers[constants.HEADER_ROLE] == (
diff --git a/trino/client.py b/trino/client.py
index 5ee5ed0b..7cc1f0f2 100644
--- a/trino/client.py
+++ b/trino/client.py
@@ -522,7 +522,8 @@ def http_headers(self) -> CaseInsensitiveDict[str]:
             headers[constants.HEADER_ENCODING] = self._client_session.encoding
         else:
             raise ValueError("Invalid type for encoding: expected str or list")
-        headers[constants.HEADER_CLIENT_CAPABILITIES] = 'PARAMETRIC_DATETIME,SESSION_AUTHORIZATION'
+        headers[constants.HEADER_CLIENT_CAPABILITIES] = constants.CLIENT_CAPABILITIES
+
         headers["user-agent"] = f"{constants.CLIENT_NAME}/{__version__}"
         if len(self._client_session.roles.values()):
             headers[constants.HEADER_ROLE] = ",".join(
diff --git a/trino/constants.py b/trino/constants.py
index 20714e9f..46b6e9ec 100644
--- a/trino/constants.py
+++ b/trino/constants.py
@@ -57,6 +57,9 @@
 HEADER_SET_CATALOG = "X-Trino-Set-Catalog"
 
 HEADER_CLIENT_CAPABILITIES = "X-Trino-Client-Capabilities"
+CLIENT_CAPABILITY_PARAMETRIC_DATETIME = "PARAMETRIC_DATETIME"
+CLIENT_CAPABILITY_SESSION_AUTHORIZATION = "SESSION_AUTHORIZATION"
+CLIENT_CAPABILITIES = ','.join([CLIENT_CAPABILITY_PARAMETRIC_DATETIME, CLIENT_CAPABILITY_SESSION_AUTHORIZATION])
 
 HEADER_AUTHORIZATION_USER = "X-Trino-Authorization-User"
 HEADER_SET_AUTHORIZATION_USER = "X-Trino-Set-Authorization-User"