diff --git a/Project.toml b/Project.toml
index cae6e5279..fc89c25d6 100644
--- a/Project.toml
+++ b/Project.toml
@@ -31,6 +31,7 @@ IJulia = "1"
 PlotsBase = "0.1"
 PrecompileTools = "1"
 Reexport = "1"
+Unitful = "1"
 julia = "1.9"
 
 [extras]