diff --git a/tox.ini b/tox.ini
index 4aced8de5..5a0b9670c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -126,9 +126,6 @@ deps =
     {[testenv]deps}
     boto3
     google-cloud-storage
-    # Twisted[http2] currently forces old mitmproxy because of h2 version
-    # restrictions in their deps, so we need to pin old markupsafe here too.
-    markupsafe < 2.1.0
     robotexclusionrulesparser
     Pillow
     Twisted[http2]