diff --git a/roles/ensure-tox/tasks/main.yaml b/roles/ensure-tox/tasks/main.yaml
index 9e9c55da7..ed0ab1857 100644
--- a/roles/ensure-tox/tasks/main.yaml
+++ b/roles/ensure-tox/tasks/main.yaml
@@ -25,8 +25,6 @@
       command: '{{ ensure_pip_virtualenv_command }} {{ tox_venv_path }}'
 
     - name: Install tox to local venv
-      # We pin tox to version <4 as v4 is not currently compatible with
-      # zuul's tox siblings processing.
       command: '{{ tox_venv_path }}/bin/pip install tox{{ ensure_tox_version }}'
 
     - name: Export installed tox_executable path