diff --git a/nucleus/Cargo.toml b/nucleus/Cargo.toml
index be09dff..55ccbc8 100644
--- a/nucleus/Cargo.toml
+++ b/nucleus/Cargo.toml
@@ -35,3 +35,5 @@ bitflags = "1.2"
 cfg-if = "1.0"
 snafu = { version = "0.7.0-beta.0", default-features = false }
 static_assertions = "1.1.0"
+#enum_dispatch = "0.3"
+#tap = "1.0" -- check no_std?