diff --git a/tox.ini b/tox.ini
index 2555df93..ed1e7e03 100644
--- a/tox.ini
+++ b/tox.ini
@@ -22,7 +22,7 @@ commands =
     integration: py.test -xv -E rabbitmq t/integration {posargs:-n2}
 basepython =
     flake8,apicheck,linkcheck,pydocstyle: python3.8
-    pypy3: pypy3.9
+    pypy3: pypy-3.9
     3.7: python3.7
     3.8: python3.8
     3.9: python3.9