--- a/QXlsx/CMakeLists.txt
+++ b/QXlsx/CMakeLists.txt
@@ -137,6 +137,7 @@
     header/xlsxrichstring.h
     header/xlsxworkbook.h
     header/xlsxworksheet.h
+    header/xlsxreadsax.h
 )
 
 add_library(QXlsx
