EXHIBIT 3.1


                                 AMENDMENT NO. 1
                                       TO
                           AMENDED AND RESTATED BYLAWS
                                       OF
                         UNIVERSAL DETECTION TECHNOLOGY


Effective as of July 14, 2009, the first paragraph of Section 9 of Article II of
the Amended and Restated Bylaws of Universal Detection Technology (the
"Corporation") hereby is amended and restated in its entirety as follows:

     "Section 9. ACTION WITHOUT MEETING. Any action that may be taken at any
     annual or special meeting of shareholders may be taken without a meeting
     and without prior notice, if a consent in writing, setting forth the action
     so taken, shall be provided by the holders of outstanding shares having not
     less than the minimum number of votes that would be necessary to authorize
     or take that action at a meeting at which all shares entitled to vote
     thereon were present and voted."

I hereby certify that (a) I am the duly elected and acting Secretary of the
Corporation, and (b) the foregoing amendment was duly adopted by resolution of
the Board of Directors of the Corporation on July 14, 2009.

IN WITNESS WHEREOF, I have hereunto subscribed my name as of July 14, 2009.



                                                     /s/ Matin Emouna
                                                     -------------------------
                                                     Matin Emouna
                                                     Secretary