diff --git a/docs/Project.toml b/docs/Project.toml
index aa8f7ba8f8..8efb12ad96 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -37,6 +37,6 @@ Plots = "1.36"
 SciMLStructures = "1.1"
 StochasticDiffEq = "6"
 SymbolicIndexingInterface = "0.3.1"
-SymbolicUtils = "3"
+SymbolicUtils = "3, 4"
 Symbolics = "6"
 Unitful = "1.12"