diff --git a/test/Project.toml b/test/Project.toml
index 30daac5..8291ce5 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -8,5 +8,5 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [compat]
 StaticArrays = "1"
-SymEngine = "0.8"
+SymEngine = "0.8, 0.9"
 SymPy = "1"