diff --git a/DESCRIPTION b/DESCRIPTION
index a9859d335ab1f4d6ce8c399dba693f7d98327531..6927d4ab15321d1175d34fb85e3a1e617b6977c0 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -27,7 +27,7 @@ Imports:
   stats,
   utils
 Suggests:
-  knitr, rmarkdown,
+  knitr, markdown, rmarkdown,
   caRamel, coda, DEoptim, dplyr, FME, ggmcmc, hydroPSO, imputeTS, Rmalschains,
   GGally, ggplot2,
   testthat