diff --git a/Project.toml b/Project.toml
index b08ea2c..64dc946 100644
--- a/Project.toml
+++ b/Project.toml
@@ -10,4 +10,5 @@ OrdinaryDiffEq = "1dea7af3-3e70-54e6-95c3-0bf5283fa5ed"
 Symbolics = "0c5d862f-8b57-4792-8d23-62f2024744c7"
 
 [compat]
+Symbolics = "4"
 julia = "1.6"