diff --git a/tox.ini b/tox.ini
index 2804ebe95..12a4516ce 100644
--- a/tox.ini
+++ b/tox.ini
@@ -38,7 +38,8 @@ install_command =
 basepython = python3
 deps =
     lxml-stubs==0.2.0
-    mypy==0.971
+    mypy==0.982
+    types-attrs==19.1.0
     types-pyOpenSSL==21.0.0
     types-setuptools==57.0.0
 commands =