diff --git a/DESCRIPTION b/DESCRIPTION
index acc5cb8..af7ae49 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -23,6 +23,7 @@ Imports:
     ggplot2,
     checkmate (>= 1.1),
     parallelMap (>= 1.1),
-    reshape2 (>= 1.4.1)
+    reshape2 (>= 1.4.1),
+    gridExtra (>= 0.9.1)
 Suggests:
     testthat
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diff --git a/NAMESPACE b/NAMESPACE
index 6d5adc6..ac2bd0a 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -39,3 +39,4 @@ import(ggplot2)
 import(parallelMap)
 import(reshape2)
 import(smoof)
+importFrom(gridExtra,arrangeGrob)
diff --git a/R/zzz.R b/R/zzz.R
index 291b905..9aed22b 100644
--- a/R/zzz.R
+++ b/R/zzz.R
@@ -5,4 +5,5 @@
 #' @import checkmate
 #' @import parallelMap
 #' @import reshape2
+#' @importFrom gridExtra arrangeGrob
 NULL
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