diff --git a/docs/Project.toml b/docs/Project.toml
index cedbcc9061..2e02dc9b30 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -48,6 +48,6 @@ SciMLStructures = "1.1"
 Setfield = "1"
 StochasticDiffEq = "6"
 SymbolicIndexingInterface = "0.3.1"
-SymbolicUtils = "3"
+SymbolicUtils = "3, 4"
 Symbolics = "6"
 Unitful = "1.12"