diff --git a/tox.ini b/tox.ini
index e1e2b5fbb..89067377c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -29,7 +29,7 @@ passenv =
 # there is also secret magic in subunit-trace which lets you run in a fail only
 # mode. To do this define the TRACE_FAILONLY environmental variable.
 
-[testenv:functional{,-py39,-py310,-py311,-py312}]
+[testenv:functional{,-py310,-py311,-py312,-py313}]
 commands =
   stestr --test-path=./placement/tests/functional run {posargs}