diff --git a/docs/src/api.md b/docs/src/api.md
index cf5de29..1ed0b5e 100644
--- a/docs/src/api.md
+++ b/docs/src/api.md
@@ -8,6 +8,7 @@ XLSX.openxlsx
 XLSX.writexlsx
 XLSX.sheetnames
 XLSX.sheetcount
+XLSX.hassheet
 XLSX.Worksheet
 XLSX.readdata
 XLSX.getdata