diff --git a/docs/developer-setup.rst b/docs/developer-setup.rst
--- a/docs/developer-setup.rst
+++ b/docs/developer-setup.rst
@@ -96,7 +96,7 @@
 
 Use the same mypy version our tox containers use::
 
-    (swh) ~/swh-environment$ pip install mypy==0.920
+    (swh) ~/swh-environment$ pip install mypy==0.942
 
 In the future you can re-activate the created virtualenv with::