diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 28bb81e3..69bce6f2 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -35,7 +35,7 @@ is:
 
     $ tox -e py310
 
-This will run pytest with the python3.9 interpreter, for example.
+This will run pytest with the python3.10 interpreter, for example.
 
 To run a particular test with tox for against your current Python version: