diff --git a/Cargo.toml b/Cargo.toml
index bca068d..535c67b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,7 +7,9 @@ edition = "2021"
 anyhow = "1.0"
 cfg-if = "1.0.0"
 clap = { version = "4.5", features = ["derive"] }
+derived-deref = "2.1.0"
 fasteval = "0.2.4"
+splines = "4.3.1"
 tinyaudio = { version = "0.1", optional = true }
 
 [features]