Mr Erdogan said the military would aim to create a 30-kilometre safe zone along its border with Syria.
“We will soon take new steps regarding the incomplete portions of the project we started on the 30km deep safe zone we established along our southern border,” Mr Erdogan said.
Mr Erdogan did not provide further details but said the operation would begin after Turkey’s military, intelligence and security forces completed their preparations.
Turkish forces have launched three major incursions into northern Syria, taking control of areas along the border to secure it from threats from ISIS and the Kurdish militia, the People’s Protection Units, or YPG.
Turkey views the group as an extension of the banned Kurdistan Workers’ Party, or PKK, which is listed as a terror group by Turkey, the US and the EU.
The PKK has waged an insurgency against Turkey since 1984. Tens of thousands of people have died in the conflict.