diff --git a/Project.toml b/Project.toml
index 3b9335a..010fee2 100644
--- a/Project.toml
+++ b/Project.toml
@@ -8,6 +8,8 @@ Logging = "56ddb016-857b-54e1-b83d-db4d58db5568"
 StructTypes = "856f2bd8-1eba-4b0a-8007-ebc267875bd4"
 
 [compat]
+JSON3 = "1"
+StructTypes = "1"
 julia = "1"
 
 [extras]