diff --git a/requirements/prod.txt b/requirements/prod.txt
index 302ffb2..7492734 100644
--- a/requirements/prod.txt
+++ b/requirements/prod.txt
@@ -3,4 +3,4 @@
 # Tested with the 2.7 series. If you upgrade the major version, then run a
 # quick smoke test.
 psycopg2-binary>=2.8.6,<2.9
-gunicorn==19.9
+gunicorn==22.0.0