Presumably you mean upgrade to DST version 14?
Check this Oracle Note for details - Actions For DST Updates When Upgrading To Or Applying The 126.96.36.199 Patchset (Doc ID 1358166.1)
See Section B.3b) When upgrading from 10.1.0.x , 10.2.0.x or 11.1.0.x to 188.8.131.52:
Also take a look at the following MOS Note:
Updating the RDBMS DST version in 11g Release 2 (184.108.40.206 and up) using DBMS_DST (Doc ID 977512.1)