diff --git a/NEWS b/NEWS
index 500125b4..fe770278 100644
--- a/NEWS
+++ b/NEWS
@@ -8,6 +8,7 @@ Other changes:
 
 - Dropped support for Python 2.6, 3.2, 3.3.
 - Dropped `psycopg1` module.
+- Dropped deprecated ``register_tstz_w_secs()`` (was previously a no-op).
 
 
 What's new in psycopg 2.7.4
diff --git a/doc/src/extras.rst b/doc/src/extras.rst
index 1342f13c..15f35e80 100644
--- a/doc/src/extras.rst
+++ b/doc/src/extras.rst
@@ -1025,20 +1025,6 @@ parameters.  By reducing the number of server roundtrips the performance can be
     .. versionadded:: 2.7
 
 
-
-.. index::
-    single: Time zones; Fractional
-
-Fractional time zones
----------------------
-
-.. autofunction:: register_tstz_w_secs
-
-    .. versionadded:: 2.0.9
-
-    .. versionchanged:: 2.2.2
-        function is no-op: see :ref:`tz-handling`.
-
 .. index::
    pair: Example; Coroutine;
 
diff --git a/doc/src/usage.rst b/doc/src/usage.rst
index e52bb9fa..db8674c1 100644
--- a/doc/src/usage.rst
+++ b/doc/src/usage.rst
@@ -560,8 +560,7 @@ rounded to the nearest minute, with an error of up to 30 seconds.
 
 .. versionchanged:: 2.2.2
     timezones with seconds are supported (with rounding). Previously such
-    timezones raised an error.  In order to deal with them in previous
-    versions use `psycopg2.extras.register_tstz_w_secs()`.
+    timezones raised an error.
 
 
 .. index::
diff --git a/lib/extras.py b/lib/extras.py
index a6c025e1..68df344c 100644
--- a/lib/extras.py
+++ b/lib/extras.py
@@ -719,18 +719,6 @@ def register_inet(oid=None, conn_or_curs=None):
     return _ext.INET
 
 
-def register_tstz_w_secs(oids=None, conn_or_curs=None):
-    """The function used to register an alternate type caster for
-    :sql:`TIMESTAMP WITH TIME ZONE` to deal with historical time zones with
-    seconds in the UTC offset.
-
-    These are now correctly handled by the default type caster, so currently
-    the function doesn't do anything.
-    """
-    import warnings
-    warnings.warn("deprecated", DeprecationWarning)
-
-
 def wait_select(conn):
     """Wait until a connection or cursor has data available.