diff --git a/CRANpackages.txt b/CRANpackages.txt
index 553b298054910074c81ee0d78121c89f214dd1d7..92ba75279aba5d127328c09aedb4460b518b9979 100755
--- a/CRANpackages.txt
+++ b/CRANpackages.txt
@@ -1,4 +1,5 @@
 knitr
 dplyr
 ggplot2
+gridExtra
 reporttools