urllib3 entered the "Billion-a-Month" club in 2025

Welcome to the 2025 annual report for urllib3. I'm Illia, and this is my first time writing this update for the second most downloaded Python package. Long-time readers will recognize these reports from Seth Larson or Quentin Pradet, but this year I'm taking the baton to share what we've been up to. 2025 was a busy year defined by security hardening and future-proofing. We released 5 versions and…