diff --git a/Project.toml b/Project.toml
index 3548bb7499..d5a8b1acf6 100644
--- a/Project.toml
+++ b/Project.toml
@@ -76,7 +76,7 @@ Setfield = "0.7, 0.8, 1"
 SimpleNonlinearSolve = "0.1.0"
 SpecialFunctions = "0.7, 0.8, 0.9, 0.10, 1.0, 2"
 StaticArrays = "0.10, 0.11, 0.12, 1.0"
-SymbolicUtils = "0.19"
+SymbolicUtils = "0.19, 1"
 Symbolics = "4.9"
 UnPack = "0.1, 1.0"
 Unitful = "1.1"