diff --git a/spec/API_specification/dataframe_api/dataframe_object.py b/spec/API_specification/dataframe_api/dataframe_object.py
index 92c46410..664efa73 100644
--- a/spec/API_specification/dataframe_api/dataframe_object.py
+++ b/spec/API_specification/dataframe_api/dataframe_object.py
@@ -180,9 +180,9 @@ def get_rows_by_mask(self, mask: Column[Bool]) -> DataFrame:
         """
         ...
 
-    def insert_column(self, column: Column[Any]) -> DataFrame:
+    def insert_columns(self, columns: Column[Any] | Sequence[Column[Any]]) -> DataFrame:
         """
-        Insert column into DataFrame at rightmost location.
+        Insert column(s) into DataFrame at rightmost location.
 
         The column's name will be used as the label in the resulting dataframe.
         To insert the column with a different name, combine with `Column.rename`,
@@ -203,9 +203,24 @@ def insert_column(self, column: Column[Any]) -> DataFrame:
             df = df.insert_column(new_column.rename('a_plus_1'))
             df = df.get_columns_by_name(new_column_names)
 
+        If inserting multiple columns, then the order in which they are inserted
+        is not guaranteed and may vary across implementations. For example, the
+        following
+
+        .. code-block:: python
+
+            new_column_1 = df.get_column_by_name('a').rename('b')
+            new_column_2 = (new_column_1 + 2).rename('c')
+            df.insert_columns([new_column_1, new_column_2])
+            
+        is not supported, as `new_column_2` is derived from `new_column_1`, which may
+        not be part of the dataframe if `new_column_2` is inserted first.
+
         Parameters
         ----------
-        column : Column
+        columns : Column | Sequence[Column]
+            Column(s) to insert. These will appear at the rightmost location, but
+            insertion order is not guaranteed.
         """
         ...