diff --git a/docs/Project.toml b/docs/Project.toml
index 718afe981..fcc56c387 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -19,5 +19,5 @@ Nemo = "0.46, 0.47, 0.48, 0.49, 0.52"
 OrdinaryDiffEq = "6.31"
 Plots = "1.36"
 StaticArrays = "1.5"
-SymbolicUtils = "2.0.2, 3"
+SymbolicUtils = "2.0.2, 3, 4"
 Symbolics = "6"