Israeli airstrike on Gaza after exchange of fire
The rocket was fired into southern Israel late Sunday but hit open ground, the army statement said.
No casualties were reported on either side.
The military claimed that so far this year 16 rockets have been launched at Israel from Gaza.
On September 30, Israeli warplanes hit four training camps of Hamas's armed wing, the Izz al-Din al-Qassam Brigades, in response to a rocket fired from the Palestinian enclave.
The camps were empty at the time and nobody was injured.
Salafist militants claiming links to the Islamic State group [IS, formerly ISIS] have said they were behind recent rocket fire from Gaza, but Israel holds Hamas responsible for all such incidents.
Hamas is the Islamist movement that runs Gaza and has fought three wars with Israel since 2008, including a devastating conflict last summer which left some 2,200 Palestinians dead and more than 100,000 homeless.
Tensions have been rising in the West Bank over Israeli incursions into al-Aqsa mosque and continued occupation and settlement building in the occupied Palestinian territories, including Jerusalem.