diff --git a/packages/wf-uq-akar4/package.py b/packages/wf-uq-akar4/package.py
index 6c4e9c40932ee4885934ddcba617631784698703..2aca38fc52842465afcc58a151765d9fe9bd563d 100644
--- a/packages/wf-uq-akar4/package.py
+++ b/packages/wf-uq-akar4/package.py
@@ -21,3 +21,4 @@ class WfUqAkar4(BundlePackage):
     depends_on("r-reshape2")
     depends_on("r-r-utils")
     depends_on("r-vinecopula")
+    depends_on("r-ggplot2")