diff --git a/petl/io/__init__.py b/petl/io/__init__.py
index 28497317..e3eb6bd5 100644
--- a/petl/io/__init__.py
+++ b/petl/io/__init__.py
@@ -23,7 +23,7 @@
 
 from petl.io.xls import fromxls, toxls
 
-from petl.io.xlsx import fromxlsx, toxlsx
+from petl.io.xlsx import fromxlsx, toxlsx, appendxlsx
 
 from petl.io.numpy import fromarray, toarray, torecarray