diff --git a/Cargo.toml b/Cargo.toml
index 918a1fc82..a6ebc28cb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -30,7 +30,6 @@ log = "0.4"
 shred = { version = "0.9.1", default-features = false }
 shrev = "1.1.1"
 tuple_utils = "0.3"
-nonzero_signed = "1.0.1"
 
 rayon = { version = "1.1.0", optional = true }
 serde = { version = "1.0", optional = true, features = ["serde_derive"] }