diff --git a/Project.toml b/Project.toml
index 648fc66..105446e 100644
--- a/Project.toml
+++ b/Project.toml
@@ -27,7 +27,7 @@ DocStringExtensions = "0.9.3"
 DynamicalSystemsBase = "3.13.2"
 FileIO = "1"
 Graphs = "1.12"
-HerbConstraints = "0.2.4, 0.3"
+HerbConstraints = "0.2.4, 0.3, 0.4"
 HerbCore = "0.3.4"
 HerbGrammar = "0.5"
 HerbSearch = "0.4.1"