diff --git a/DESCRIPTION b/DESCRIPTION
index e4ee236049ec2353f130091f9fe1d102073d45e1..b046f2d21dda6ca416597843f8a5262c54eb2760 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -27,7 +27,8 @@ Imports:
 Suggests:
     xtable,
     EGRET,
-    knitr
+    knitr,
+    testthat
 LazyLoad: yes
 LazyData: yes
 VignetteBuilder: knitr