diff --git a/test_r_cran_pkgs.txt b/test_r_cran_pkgs.txt
index a9a8b15..e51a456 100644
--- a/test_r_cran_pkgs.txt
+++ b/test_r_cran_pkgs.txt
@@ -20,3 +20,4 @@ snpar
 ows4R
 d4storagehub4R
 LBSPR
+xfun
\ No newline at end of file