diff --git a/src/msyrs.pyi b/src/msyrs.pyi
index 0c8e2c2..f7ac740 100644
--- a/src/msyrs.pyi
+++ b/src/msyrs.pyi
@@ -1,4 +1,4 @@
-from polars import DataFrame
+from polars import DataFrame, Series
 
 __all__ = [
     "download",
@@ -38,3 +38,10 @@ class panel:
 
     @staticmethod
     def historic_vol(*args, **kwargs) -> DataFrame: ...
+
+    @staticmethod
+    def get_bdates_from_col_hv(*args, **kwargs) -> Series: ...
+
+    @staticmethod
+    def get_period_indices_hv(*args, **kwargs) -> Series: ...
+   
\ No newline at end of file