diff --git a/tox.ini b/tox.ini
index 63409e54498..fab9cb8a952 100644
--- a/tox.ini
+++ b/tox.ini
@@ -34,12 +34,20 @@ deps =
 commands =
   black {toxinidir}/plugins {toxinidir}/tests
 
+[testenv:isort]
+deps =
+  isort
+commands =
+  isort {toxinidir}/plugins {toxinidir}/tests
+
 [testenv:linters]
 deps =
   {[testenv:black]deps}
+  {[testenv:isort]deps}
   flake8
 commands =
   black -v --check {toxinidir}/plugins {toxinidir}/tests
+  isort --check-only --diff {toxinidir}/plugins {toxinidir}/tests
   flake8 {posargs} {toxinidir}/plugins {toxinidir}/tests
 
 [flake8]