diff --git a/DESCRIPTION b/DESCRIPTION
index 3b6b4a2434b7ab61099a11d0360f86afe1026fc9..3443b6ab2ffb63bc51253043162b7f291b10ee3f 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -33,7 +33,8 @@ Imports:
     lattice,
     latticeExtra,
     doBy,
-    multcomp
+    multcomp,
+    bbmle
 Suggests:
     MASS,
     car,