diff --git a/Project.toml b/Project.toml
index 02f12e6..1885f2d 100644
--- a/Project.toml
+++ b/Project.toml
@@ -22,6 +22,7 @@ Tables = "bd369af6-aec1-5ad0-b16a-f7cc5008161c"
 
 [compat]
 CategoricalArrays = "0.10"
+DelimitedFiles = "1"
 Distributions = "0.16 - 0.25"
 GLM = "1"
 Ipopt = "0.6.5 - 0.7, 0.8, 0.9, 1"