diff --git a/DESCRIPTION b/DESCRIPTION
index 0c54e87..d54bcca 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -48,6 +48,7 @@ Suggests:
     knitr,
     RefManageR,
     rmarkdown,
+    markdown,
     scRNAseq,
     sessioninfo,
     testthat (>= 3.0.0),