diff --git a/Project.toml b/Project.toml
index 2d5b0bb..d08dfb4 100644
--- a/Project.toml
+++ b/Project.toml
@@ -15,6 +15,7 @@ StructTypes = "856f2bd8-1eba-4b0a-8007-ebc267875bd4"
 
 [compat]
 Cobweb = "0.1, 0.2"
+StructTypes = "0.1"
 DefaultApplication = "1"
 EasyConfig = "0.1.10"
 JSON3 = "1.8"