written by David Lord on 2018-04-26 in Security , Releases The Pallets team is pleased to release Flask 1.0. The Flask framework has been stable for a long time. A little more than 8 years after the first commit, the version number finally reflects that. 1.0 comes with a significant number of changes representing over a year of work. Dropped support for Python 2.6 and 3.3. The CLI is more flexible