diff --git a/activitystreams-derive/Cargo.toml b/activitystreams-derive/Cargo.toml
index 45e2a53..ee0074c 100644
--- a/activitystreams-derive/Cargo.toml
+++ b/activitystreams-derive/Cargo.toml
@@ -15,7 +15,7 @@ syn = "1.0"
 proc-macro2 = "1.0"
 
 [dev-dependencies]
-#activitystreams-traits = { version = "0.4.0-alpha.0", path = "../activitystreams-traits" }
+activitystreams-traits = { version = "0.4.0-alpha.0", path = "../activitystreams-traits" }
 serde = "1.0"
 serde_derive = "1.0"
 serde_json = "1.0"