diff --git a/Project.toml b/Project.toml
index 74d81a0..9d75742 100644
--- a/Project.toml
+++ b/Project.toml
@@ -19,6 +19,7 @@ XLSX = "fdbf4ff8-1666-58a4-91e7-1b58723a45e0"
 
 [compat]
 AbstractTrees = "0.4"
+Dates = "1.10"
 DelimitedFiles = "1"
 Graphs = "1"
 MetaGraphsNext = "0.5, 0.6, 0.7, 0.8"