diff --git a/edisgo/edisgo.py b/edisgo/edisgo.py
index 360f8118..4c5e9297 100755
--- a/edisgo/edisgo.py
+++ b/edisgo/edisgo.py
@@ -998,7 +998,7 @@ def analyze(
         range_num: int = 10,
         scale_timeseries: float | None = None,
         **kwargs,
-    ) -> tuple[pd.DataFrame, pd.DataFrame]:
+    ) -> tuple[pd.DatetimeIndex, pd.DatetimeIndex]:
         """
         Conducts a static, non-linear power flow analysis.