diff --git a/tox.ini b/tox.ini
index 1b9de4b..940806b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -16,6 +16,7 @@ commands = {posargs}
 
 # Dogfood our current mastera version
 [testenv:dogfood]
+basepython = python3
 skip_install = true
 deps =
     wheel
@@ -88,11 +89,13 @@ deps =
     {[testenv:flake8]deps}
     {[testenv:pylint]deps}
     {[testenv:doc8]deps}
+    {[testenv:readme]deps}
     {[testenv:bandit]deps}
 commands =
     {[testenv:flake8]commands}
     {[testenv:pylint]commands}
     {[testenv:doc8]commands}
+    {[testenv:readme]commands}
     {[testenv:bandit]commands}
 
 # Documentation
@@ -114,6 +117,7 @@ commands =
     python -m http.server {posargs}
 
 [testenv:readme]
+basepython = python3
 deps =
     readme_renderer
 commands =