Sort the output of `mat2 -l`

1 files changed, 2 insertions, 2 deletions

diff --git a/libmat2/abstract.py b/libmat2/abstract.py
index b7ccae9..7aac284 100644
--- a/libmat2/abstract.py
+++ b/libmat2/abstract.py
@@ -1,6 +1,6 @@
 import abc
 import os
-from typing import Set
+from typing import Set, Dict
 
 assert Set  # make pyflakes happy
 
@@ -15,7 +15,7 @@ class AbstractParser(abc.ABC):
         self.output_filename = fname + '.cleaned' + extension
 
     @abc.abstractmethod
-    def get_meta(self) -> dict:
+    def get_meta(self) -> Dict[str, str]:
         pass
 
     @abc.abstractmethod