ADDENDUM TO SUB-ADVISORY AGREEMENT
                              SMALL CAP GROWTH FUND
                           TOUCHSTONE STRATEGIC TRUST

This Agreement is entered into as of January 1, 2007 by and between Touchstone
Advisors, Inc. ("Touchstone") and Bjurman, Barry & Associates ("Bjurman").

            WHEREAS, Touchstone and Bjurman entered into a Sub-Advisory
Agreement dated as of September 10, 2002 (the "Sub-Advisory Agreement") with
respect to the Small Cap Growth Fund (the "Fund"), a series of Touchstone
Strategic Trust; and

            WHEREAS, Touchstone and Bjurman wish to enter into this Addendum to
the Sub-Advisory Agreement;

            NOW, THEREFORE, it is agreed by and between the parties hereto as
follows:

      1.    Pursuant to Section 3 of the Sub-Advisory Agreement Bjurman will
            receive a monthly fee equal on an annual basis to 0.65% of the
            Fund's average daily net assets until such time as is mutually
            agreed upon by Touchstone and Bjurman.

      2.    Except as amended by this Addendum, the Sub-Advisory Agreement shall
            continue in full force and effect.

      3.    This Addendum shall be binding upon the parties and, to the extent
            permitted by law and the Sub-Advisory Agreement, their respective
            successors and assigns.

IN WITNESS WHEREOF, each of the parties hereto has caused this Addendum to be
duly executed and delivered in its name and on its behalf by their respective
officers thereunto duly authorized, all as of the day and year first above
written.

TOUCHSTONE ADVISORS, INC.               BJURMAN, BARRY & ASSOCIATES


By: /s/ James H. Grifo                  By: /s/ G. Andrew Bjurman
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Print Name:                             Print Name:
            -------------------------               ----------------------------


Print Title: President                  Print Title: President

Date: 06-01-07                          Date: 06-05-07