diff --git a/Project.toml b/Project.toml
index 1709ce7..d3ff9de 100644
--- a/Project.toml
+++ b/Project.toml
@@ -32,6 +32,7 @@ Term = "22787eb5-b846-44ae-b979-8e399b8463ab"
 UnicodePlots = "b8865327-cd53-5732-bb35-84acbb429228"
 
 [compat]
+CategoricalArrays = "1"
 DiffEqCallbacks = "3.9.1"
 ModelingToolkit = "9.41.0"
 SymbolicIndexingInterface = "0.3.37"