diff --git a/Project.toml b/Project.toml
index 8b80a518..e87931cd 100644
--- a/Project.toml
+++ b/Project.toml
@@ -16,7 +16,7 @@ libcint_jll = "574b78ca-bebd-517c-801d-4735c93a9686"
 Combinatorics = "1"
 PiecewiseQuadratics = "0.1"
 SeparableOptimization = "0.1"
-SymbolicUtils = "0.13"
+SymbolicUtils = "0.13, 0.15"
 Symbolics = "3"
 julia = "^1.5"
 libcint_jll = "~3.0.0"