diff --git a/tox.ini b/tox.ini
index adc4e9746..03fa0af8b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -115,8 +115,6 @@ skipsdist = True
 usedevelop = True
 changedir = doc/en
 deps =
-    attrs
-    more-itertools
     PyYAML
     sphinx
     sphinxcontrib-trio