diff --git a/dsp/Cargo.toml b/dsp/Cargo.toml
index 9c6b411..8e07060 100644
--- a/dsp/Cargo.toml
+++ b/dsp/Cargo.toml
@@ -7,7 +7,6 @@ edition = "2018"
 [dependencies]
 libm = "0.2.1"
 serde = { version = "1.0", features = ["derive"], default-features = false }
-serde-json-core = "0.1"
 generic-array = "0.14"
 
 [dev-dependencies]