Membership Premium

Hi:

I get the following error every time I try to active the Membership Premium plugin.

Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 4864 bytes) in /home/shinshur/public_html/wp-admin/includes/update.php on line 157

How can I resolve this issue?

Here is my WP Press site link:
http://shinshuri.com