Error_Log full of PHP Strict Standards SugarWebServiceUtilv4.php

I am seeing the following repeated errors in the Error_Log inside the public_html folder on our cPanel hosting server for our Suite 7.5.3 installation.

[10-May-2016 16:07:17 UTC] PHP Strict Standards: Declaration of SugarWebServiceUtilv4::get_data_list() should be compatible with SugarWebServiceUtilv3_1::get_data_list($seed, $order_by = ā€˜ā€™, $where = ā€˜ā€™, $row_offset = 0, $limit = -1, $max = -1, $show_deleted = 0, $favorites = false, $singleSelect = false) in /accounts/site/public_html/service/v4/SugarWebServiceUtilv4.php on line 555
[10-May-2016 16:07:17 UTC] PHP Strict Standards: Declaration of SugarWebServiceImplv4::get_entries() should be compatible with SugarWebServiceImplv3_1::get_entries($session, $module_name, $ids, $select_fields, $link_name_to_fields_array, $track_view = false) in /accounts/site/public_html/service/v4/SugarWebServiceImplv4.php on line 49
[10-May-2016 16:07:17 UTC] PHP Strict Standards: Declaration of SugarEmailAddress::save() should be compatible with SugarBean::save($check_notify = false) in /accounts/site/public_html/include/SugarEmailAddress/SugarEmailAddress.php on line 1113

I’m not sure what they mean and if I should be worried at all, any help would be welcome.