diff --git a/tablib/formats/_xlsx.py b/tablib/formats/_xlsx.py
index 20f55df..67aa5f4 100644
--- a/tablib/formats/_xlsx.py
+++ b/tablib/formats/_xlsx.py
@@ -71,7 +71,7 @@ def import_set(dset, in_stream, headers=True):
     dset.wipe()
 
     xls_book = openpyxl.reader.excel.load_workbook(BytesIO(in_stream))
-    sheet = xls_book.get_active_sheet()
+    sheet = xls_book.active
 
     dset.title = sheet.title