diff --git a/DESCRIPTION b/DESCRIPTION
index aa83a184..db400664 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -43,7 +43,8 @@ Suggests:
     testthat (>= 3.0.0),
     tibble (>= 3.0.4),
     waldo (>= 0.2.5),
-    withr (>= 2.3.0)
+    withr (>= 2.3.0),
+    xopen
 RoxygenNote: 7.2.3
 Roxygen: list(markdown = TRUE)
 Config/testthat/edition: 3