diff --git a/docs/source/api.rst b/docs/source/api.rst
index 7e59c72d0..35bc6aad9 100644
--- a/docs/source/api.rst
+++ b/docs/source/api.rst
@@ -111,6 +111,16 @@ The auth token is an object of the class :class:`neo4j.Auth` containing static d
 
 .. autoclass:: neo4j.Auth
 
+Example:
+
+.. code-block:: python
+
+    import neo4j
+
+
+    auth = neo4j.Auth("basic", "neo4j", "password")
+
+
 .. autoclass:: neo4j.auth_management.AuthManager
     :members:
 
@@ -118,16 +128,9 @@ The auth token is an object of the class :class:`neo4j.Auth` containing static d
     :members:
 
 .. autoclass:: neo4j.auth_management.ExpiringAuth
+    :members:
 
 
-Example:
-
-.. code-block:: python
-
-    import neo4j
-
-
-    auth = neo4j.Auth("basic", "neo4j", "password")
 
 
 Auth Token Helper Functions
diff --git a/src/neo4j/_auth_management.py b/src/neo4j/_auth_management.py
index c4f7b259f..4e6f101ef 100644
--- a/src/neo4j/_auth_management.py
+++ b/src/neo4j/_auth_management.py
@@ -58,12 +58,18 @@ class ExpiringAuth:
         :meth:`.AsyncAuthManagers.expiration_based`
 
     .. versionadded:: 5.8
+
+    .. versionchanged:: 5.9
+        Removed parameter and attribute ``expires_in`` (relative expiration
+        time). Replaced with ``expires_at`` (absolute expiration time).
+        :meth:`.expires_in` can be used to create an :class:`.ExpiringAuth`
+        with a relative expiration time.
     """
     auth: "_TAuth"
     expires_at: t.Optional[float] = None
 
     def expires_in(self, seconds: float) -> "ExpiringAuth":
-        """Return a copy of this object with a new expiration time.
+        """Return a (flat) copy of this object with a new expiration time.
 
         This is a convenience method for creating an :class:`.ExpiringAuth`
         for a relative expiration time ("expires in" instead of "expires at").
@@ -79,6 +85,8 @@ def expires_in(self, seconds: float) -> "ExpiringAuth":
         :param seconds:
             The number of seconds from now until the authentication information
             expires.
+
+        .. versionadded:: 5.9
         """
         with warnings.catch_warnings():
             warnings.filterwarnings("ignore",