1 files changed, 2 insertions, 2 deletions

diff --git a/libmat2/abstract.py b/libmat2/abstract.py
index 1aff630..c531fbd 100644
--- a/libmat2/abstract.py
+++ b/libmat2/abstract.py
@@ -9,8 +9,8 @@ class AbstractParser(abc.ABC):
     It might yield `ValueError` on instantiation on invalid files,
     and `RuntimeError` when something went wrong in `remove_all`.
     """
-    meta_list = set()  # type: Set[str]
-    mimetypes = set()  # type: Set[str]
+    meta_list: Set[str] = set()
+    mimetypes: Set[str] = set()
 
     def __init__(self, filename: str) -> None:
         """