diff --git a/.isort.cfg b/.isort.cfg
index 0c5b431b..f2cc03f4 100644
--- a/.isort.cfg
+++ b/.isort.cfg
@@ -4,4 +4,4 @@ include_trailing_comma=True
 force_grid_wrap=0
 use_parentheses=True
 line_length=88
-known_third_party = setuptools
+known_third_party = imp,setuptools