I want to shrink temp db datafile

See more:

SQL

I want to shrink temp db data files on server. I can not restart service.
a have following query to shrink temp db

USE [tempdb]
GO
DBCC SHRINKFILE (N'tempdev' , 1024)
GO

but It is not shrinking file gives following error

DBCC SHRINKFILE: Page 1:11226848 could not be moved because it is a work table page.

(1 row(s) affected)
DBCC execution completed. If DBCC printed error messages, contact your system administrator.

What I have tried:

1)

USE [tempdb]
GO
DBCC FREESYSTEMCACHE ('ALL')

DBCC SHRINKFILE (N'tempdev' , 1024)
GO

-------------------------------------
2)

DBCC FREEPROCCACHE;
GO
DBCC SHRINKFILE (N'tempdev' , 1024)
GO

but in both cases It gives following error

DBCC execution completed. If DBCC printed error messages, contact your system administrator.
DBCC SHRINKFILE: Page 1:11226848 could not be moved because it is a work table page.

(1 row(s) affected)
DBCC execution completed. If DBCC printed error messages, contact your system administrator.