diff --git a/tox.ini b/tox.ini
index 2713953e..ed025b84 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,6 +12,7 @@ deps =
     ipython
     mock
 commands =
+    python -m sysconfig
     python -m julia.find_libpython --list-all --verbose
     # Print libpython candidates found by `find_libpython`.  It may be
     # useful for debugging.