diff --git a/DESCRIPTION b/DESCRIPTION
index aab9e0246900dcb4766c2600b943fd198e3e53a4..e4eddf584cb60c07de716f5da75f03c4a9275494 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -33,6 +33,8 @@ Suggests:
     captioner,
     mgcv,
     nlme,
+    lme4,
+    lmerTest,
     proto,
     nls2,
     rootSolve,