diff --git a/tox.ini b/tox.ini
index 87f0ea8..2351537 100644
--- a/tox.ini
+++ b/tox.ini
@@ -22,8 +22,10 @@ description =
 passenv =
   CI
   GITHUB_*
+runner = uv-venv-lock-runner
 setenv =
   py3.{10,11,12,13,14}-unit: LC_ALL = C.UTF-8
+uv_sync_flags = --no-dev
 
 [testenv:bandit]
 commands = bandit -r streamflow