diff --git a/installers/charm/osm-lcm/tox.ini b/installers/charm/osm-lcm/tox.ini
index 0268da8..16c1359 100644
--- a/installers/charm/osm-lcm/tox.ini
+++ b/installers/charm/osm-lcm/tox.ini
@@ -29,6 +29,7 @@
 all_path = {[vars]src_path} {[vars]tst_path} 
 
 [testenv]
+basepython = python3.8
 setenv =
   PYTHONPATH = {toxinidir}:{toxinidir}/lib:{[vars]src_path}
   PYTHONBREAKPOINT=ipdb.set_trace