diff --git a/DESCRIPTION b/DESCRIPTION
index cad5ba7..7d9d201 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -35,7 +35,8 @@ Imports:
     purrr (>= 0.3.3),
     rlist (>= 0.4.6.1),
     matrixStats (>= 0.55.0),
-    SummarizedExperiment (>= 1.14.1)
+    SummarizedExperiment (>= 1.14.1),
+    S4Vectors (>= 0.22.1)
 VignetteBuilder: knitr
 biocViews: Software, GeneExpression, Network, Clustering, GraphAndNetwork,
            GeneSetEnrichment, Pathways, Visualization, RNASeq, Transcriptomics,