diff --git a/pandas/core/groupby/groupby.py b/pandas/core/groupby/groupby.py
index 07655fb816b4f..85fdb13e557d1 100644
--- a/pandas/core/groupby/groupby.py
+++ b/pandas/core/groupby/groupby.py
@@ -2670,6 +2670,7 @@ def sem(self, ddof: int = 1, numeric_only: bool = False) -> NDFrameT:
         See Also
         --------
         DataFrame.sem : Return unbiased standard error of the mean over requested axis.
+        Series.sem : Return unbiased standard error of the mean over requested axis.
 
         Examples
         --------