It would be a good idea to have a look at your insurance documents / renewals, as of 1 January 2017 the minimum limits of the sums insured may not be less than the amounts specified below:
a) 1.220.000 Euros for bodily injuries, per victim (up from 1.000.000 Euros)
b) 1.220.000 Euros for damage to property, per accident, irrespective of the number of victims. (up from 1.000.000 Euros)
Whether or not this legal increase requirement means an increase in the premium is a matter of each insurance company and its policy...