diff --git a/Modules/_io/clinic/iobase.c.h b/Modules/_io/clinic/iobase.c.h
--- a/Modules/_io/clinic/iobase.c.h
+++ b/Modules/_io/clinic/iobase.c.h
@@ -2,6 +2,45 @@
 preserve
 [clinic start generated code]*/
 
+PyDoc_STRVAR(_io__IOBase_seek__doc__,
+"seek($self, /, offset, whence=0)\n"
+"--\n"
+"\n"
+"Change stream position.\n"
+"\n"
+"Change the stream position to the given byte offset. The offset is\n"
+"interpreted relative to the position indicated by whence.  Values\n"
+"for whence are:\n"
+"\n"
+"* 0 -- start of stream (the default); offset should be zero or positive\n"
+"* 1 -- current stream position; offset may be negative\n"
+"* 2 -- end of stream; offset is usually negative\n"
+"\n"
+"Return the new absolute position.");
+
+#define _IO__IOBASE_SEEK_METHODDEF    \
+    {"seek", (PyCFunction)_io__IOBase_seek, METH_VARARGS|METH_KEYWORDS, _io__IOBase_seek__doc__},
+
+static PyObject *
+_io__IOBase_seek_impl(PyObject *self, PyObject *offset, int whence);
+
+static PyObject *
+_io__IOBase_seek(PyObject *self, PyObject *args, PyObject *kwargs)
+{
+    PyObject *return_value = NULL;
+    static char *_keywords[] = {"offset", "whence", NULL};
+    PyObject *offset;
+    int whence = 0;
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|i:seek", _keywords,
+        &offset, &whence))
+        goto exit;
+    return_value = _io__IOBase_seek_impl(self, offset, whence);
+
+exit:
+    return return_value;
+}
+
 PyDoc_STRVAR(_io__IOBase_tell__doc__,
 "tell($self, /)\n"
 "--\n"
@@ -276,4 +315,4 @@
 {
     return _io__RawIOBase_readall_impl(self);
 }
-/*[clinic end generated code: output=fe034152b6884e65 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=2102594286c3244f input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/textio.c.h b/Modules/_io/clinic/textio.c.h
--- a/Modules/_io/clinic/textio.c.h
+++ b/Modules/_io/clinic/textio.c.h
@@ -265,24 +265,25 @@
 }
 
 PyDoc_STRVAR(_io_TextIOWrapper_seek__doc__,
-"seek($self, cookie, whence=0, /)\n"
+"seek($self, /, offset, whence=0)\n"
 "--\n"
 "\n");
 
 #define _IO_TEXTIOWRAPPER_SEEK_METHODDEF    \
-    {"seek", (PyCFunction)_io_TextIOWrapper_seek, METH_VARARGS, _io_TextIOWrapper_seek__doc__},
+    {"seek", (PyCFunction)_io_TextIOWrapper_seek, METH_VARARGS|METH_KEYWORDS, _io_TextIOWrapper_seek__doc__},
 
 static PyObject *
 _io_TextIOWrapper_seek_impl(textio *self, PyObject *cookieObj, int whence);
 
 static PyObject *
-_io_TextIOWrapper_seek(textio *self, PyObject *args)
+_io_TextIOWrapper_seek(textio *self, PyObject *args, PyObject *kwargs)
 {
     PyObject *return_value = NULL;
+    static char *_keywords[] = {"offset", "whence", NULL};
     PyObject *cookieObj;
     int whence = 0;
 
-    if (!PyArg_ParseTuple(args, "O|i:seek",
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|i:seek", _keywords,
         &cookieObj, &whence))
         goto exit;
     return_value = _io_TextIOWrapper_seek_impl(self, cookieObj, whence);
@@ -453,4 +454,4 @@
 {
     return _io_TextIOWrapper_close_impl(self);
 }
-/*[clinic end generated code: output=690608f85aab8ba5 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=7f6eef70bbd7b088 input=a9049054013a1b77]*/
diff --git a/Modules/_io/iobase.c b/Modules/_io/iobase.c
--- a/Modules/_io/iobase.c
+++ b/Modules/_io/iobase.c
@@ -91,21 +91,28 @@
 
 /* Positionning */
 
-PyDoc_STRVAR(iobase_seek_doc,
-    "Change stream position.\n"
-    "\n"
-    "Change the stream position to the given byte offset. The offset is\n"
-    "interpreted relative to the position indicated by whence.  Values\n"
-    "for whence are:\n"
-    "\n"
-    "* 0 -- start of stream (the default); offset should be zero or positive\n"
-    "* 1 -- current stream position; offset may be negative\n"
-    "* 2 -- end of stream; offset is usually negative\n"
-    "\n"
-    "Return the new absolute position.");
+/*[clinic input]
+_io._IOBase.seek
+
+    offset: object
+    whence: int = 0
+
+Change stream position.
+
+Change the stream position to the given byte offset. The offset is
+interpreted relative to the position indicated by whence.  Values
+for whence are:
+
+* 0 -- start of stream (the default); offset should be zero or positive
+* 1 -- current stream position; offset may be negative
+* 2 -- end of stream; offset is usually negative
+
+Return the new absolute position.
+[clinic start generated code]*/
 
 static PyObject *
-iobase_seek(PyObject *self, PyObject *args)
+_io__IOBase_seek_impl(PyObject *self, PyObject *offset, int whence)
+/*[clinic end generated code: output=2f8010d73d69d237 input=8807cb26c5e9e48b]*/
 {
     return iobase_unsupported("seek");
 }
@@ -743,7 +750,7 @@
 #include "clinic/iobase.c.h"
 
 static PyMethodDef iobase_methods[] = {
-    {"seek", iobase_seek, METH_VARARGS, iobase_seek_doc},
+    _IO__IOBASE_SEEK_METHODDEF
     _IO__IOBASE_TELL_METHODDEF
     {"truncate", iobase_truncate, METH_VARARGS, iobase_truncate_doc},
     _IO__IOBASE_FLUSH_METHODDEF
diff --git a/Modules/_io/textio.c b/Modules/_io/textio.c
--- a/Modules/_io/textio.c
+++ b/Modules/_io/textio.c
@@ -2060,14 +2060,14 @@
 
 /*[clinic input]
 _io.TextIOWrapper.seek
-    cookie as cookieObj: object
+    offset as cookieObj: object
     whence: int = 0
-    /
+
 [clinic start generated code]*/
 
 static PyObject *
 _io_TextIOWrapper_seek_impl(textio *self, PyObject *cookieObj, int whence)
-/*[clinic end generated code: output=0a15679764e2d04d input=0458abeb3d7842be]*/
+/*[clinic end generated code: output=0a15679764e2d04d input=6a2868a9746bb114]*/
 {
     PyObject *posobj;
     cookie_type cookie;