diff --git a/setup.cfg b/setup.cfg
index d73ed68ed..fef078d9a 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -52,3 +52,7 @@ ignore_missing_imports = True
 
 [mypy-h5py.*]
 ignore_missing_imports = True
+
+[isort]
+# We haven't isort'ed our files yet.
+skip_glob=*