diff --git a/tox.ini b/tox.ini
index b62c7a6d4..13ac09f5e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -31,11 +31,6 @@ deps =
 files = beets beetsplug beet test setup.py docs
 
 [testenv]
-basepython =
-    py27: python2.7
-    py33: python3.3
-    py34: python3.4
-    py35: python3.5
 passenv =
     NOSE_SHOW_SKIPPED # Undocumented feature of nose-show-skipped.
 deps =