fixup

rhshadrach · rhshadrach · commit dbdec9f6dcde · 2023-11-05T18:23:13.000-05:00
diff --git a/pandas/core/reshape/pivot.py b/pandas/core/reshape/pivot.py
@@ -717,6 +717,7 @@ def crosstab(
         margins=margins,
         margins_name=margins_name,
         dropna=dropna,
+        observed=dropna,
         **kwargs,  # type: ignore[arg-type]
     )
 
