diff --git a/Project.toml b/Project.toml
index edca6ff..4b42142 100644
--- a/Project.toml
+++ b/Project.toml
@@ -25,7 +25,7 @@ JuMP = "1"
 PrecompileTools = "1"
 RecipesBase = "1"
 Reexport = "1"
-TreatmentPanels = "0.3"
+TreatmentPanels = "0.3, 0.4"
 julia = "1.6"
 
 [extras]