diff --git a/Cargo.toml b/Cargo.toml
index 827c5df..50fff8e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,6 +24,7 @@ derive_more = "0.99.3"
 image = "0.23.0"
 rand = "0.7"
 serde_yaml = "0.8"
+typetag = "0.1"
 
 [dependencies.serde]
 version = "1.0"