diff --git a/DESCRIPTION b/DESCRIPTION
index 360cb52..0ceb7eb 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,30 +1,31 @@
 Package: challengeR
 Type: Package
 Title: Analyzing assessment data of biomedical image analysis competitions and visualization of results
 Version: 0.3.3
 Date: 2020-04-18
 Author: Manuel Wiesenfarth, Annette Kopp-Schneider
 Maintainer: Manuel Wiesenfarth <m.wiesenfarth@dkfz.de>
 Description: Analyzing assessment data of biomedical image analysis competitions and visualization of results.
 License: GPL-3
-Depends: R (>= 3.5.2)
+Depends:
+  R (>= 3.5.2),
+  ggplot2 (>= 3.3.0),
+  purrr (>= 0.3.3)
 Imports:
   dplyr (>= 0.8.5),
-  ggplot2 (>= 3.3.0),
   graph (>= 1.64.0),
   knitr (>= 1.28),
   methods (>= 3.6.0),
   plyr (>= 1.8.6),
-  purrr (>= 0.3.3),
   relations (>= 0.6-9),
   reshape2 (>= 1.4.3),
   rlang (>= 0.4.5),
   rmarkdown (>= 2.1),
   tidyr (>= 1.0.2),
   viridisLite (>= 0.3.0)
 Suggests:
   doParallel (>= 1.0.15),
   foreach (>= 1.4.8),
   ggpubr (>= 0.2.5),
   Rgraphviz (>= 2.30.0),
   testthat (>= 2.1.0)