diff --git a/tox.ini b/tox.ini
index b6ebfdb..f5d20aa 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,14 +13,20 @@ description = run tests
 extras = tests
 deps =
     sphinx17: sphinx==1.7.*
+    sphinx17: Jinja2==3.0.3
     sphinx18: sphinx==1.8.*
+    sphinx18: Jinja2==3.0.3
     sphinx20: sphinx==2.0.*
     sphinx20: docutils==0.17.*
+    sphinx20: Jinja2==3.0.3
     sphinx24: sphinx==2.4.*
     sphinx24: docutils==0.17.*
+    sphinx24: Jinja2==3.0.3
     sphinx30: sphinx==3.0.*
     sphinx30: docutils==0.17.*
+    sphinx30: Jinja2==3.0.3
     sphinx35: sphinx==3.5.*
+    sphinx35: Jinja2==3.0.3
     sphinx40: sphinx==4.0.*
     sphinxdev: git+https://github.com/sphinx-doc/sphinx#egg=sphinx