diff --git a/utils/python/MITgcmutils/tox.ini b/utils/python/MITgcmutils/tox.ini
index 7228e4fe70..836eb517f3 100644
--- a/utils/python/MITgcmutils/tox.ini
+++ b/utils/python/MITgcmutils/tox.ini
@@ -8,7 +8,7 @@ extras =
 deps =
     pytest
     nose
-    py36: matplotlib < 3.3.0
+    basemap
 commands = py.test
 setenv =
     PYTHONPATH = {toxinidir}
@@ -16,3 +16,6 @@ download = True
 
 [testenv:py38]
 extras =
+deps =
+    pytest
+    nose