diff --git a/Cargo.lock b/Cargo.lock
index 20f5c7e..b6b17f1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -52,15 +52,6 @@ version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "55248b47b0caf0546f7988906588779981c43bb1bc9d0c44087278f80cdb44ba"
 
-[[package]]
-name = "bincode"
-version = "1.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1f45e9417d87227c7a56d22e471c6206462cba514c7590c09aff4cf6d1ddcad"
-dependencies = [
- "serde",
-]
-
 [[package]]
 name = "bit-set"
 version = "0.8.0"
@@ -389,7 +380,6 @@ dependencies = [
 name = "ed25519"
 version = "3.0.0-rc.2"
 dependencies = [
- "bincode",
  "hex-literal",
  "pkcs8",
  "rand_core 0.9.3",
@@ -403,7 +393,6 @@ dependencies = [
 name = "ed448"
 version = "0.5.0-rc.2"
 dependencies = [
- "bincode",
  "hex-literal",
  "pkcs8",
  "serde",
diff --git a/ed25519/Cargo.toml b/ed25519/Cargo.toml
index 34e5c4a..84d8d8e 100644
--- a/ed25519/Cargo.toml
+++ b/ed25519/Cargo.toml
@@ -27,7 +27,6 @@ serde_bytes = { version = "0.11", optional = true, default-features = false }
 zeroize = { version = "1", optional = true, default-features = false }
 
 [dev-dependencies]
-bincode = "1"
 #ed25519-dalek = { version = "2", features = ["rand_core"] }
 hex-literal = "1"
 #ring-compat = { version = "0.8", default-features = false, features = ["signature"] }
diff --git a/ed25519/src/serde.rs b/ed25519/src/serde.rs
index 1ada686..51f7b8c 100644
--- a/ed25519/src/serde.rs
+++ b/ed25519/src/serde.rs
@@ -96,26 +96,3 @@ impl<'de> serde_bytes::Deserialize<'de> for Signature {
             .map(Into::into)
     }
 }
-
-#[cfg(test)]
-mod tests {
-    use crate::{Signature, SignatureBytes};
-    use hex_literal::hex;
-
-    const SIGNATURE_BYTES: SignatureBytes = hex!(
-        "
-        e5564300c360ac729086e2cc806e828a
-        84877f1eb8e5d974d873e06522490155
-        5fb8821590a33bacc61e39701cf9b46b
-        d25bf5f0595bbe24655141438e7a100b
-        "
-    );
-
-    #[test]
-    fn round_trip() {
-        let signature = Signature::from_bytes(&SIGNATURE_BYTES);
-        let serialized = bincode::serialize(&signature).expect("serialized");
-        let deserialized = bincode::deserialize(&serialized).expect("deserialized");
-        assert_eq!(signature, deserialized);
-    }
-}
diff --git a/ed25519/tests/serde.rs b/ed25519/tests/serde.rs
deleted file mode 100644
index 5e8ff6f..0000000
--- a/ed25519/tests/serde.rs
+++ /dev/null
@@ -1,61 +0,0 @@
-//! Tests for serde serializers/deserializers
-
-#![cfg(feature = "serde")]
-
-use ed25519::{Signature, SignatureBytes};
-use hex_literal::hex;
-
-const EXAMPLE_SIGNATURE: SignatureBytes = hex!(
-    "3f3e3d3c3b3a393837363534333231302f2e2d2c2b2a29282726252423222120"
-    "1f1e1d1c1b1a191817161514131211100f0e0d0c0b0a09080706050403020100"
-);
-
-#[test]
-fn test_serialize() {
-    let signature = Signature::try_from(&EXAMPLE_SIGNATURE[..]).unwrap();
-    let encoded_signature: Vec<u8> = bincode::serialize(&signature).unwrap();
-    assert_eq!(&EXAMPLE_SIGNATURE[..], &encoded_signature[..]);
-}
-
-#[test]
-fn test_deserialize() {
-    let signature = bincode::deserialize::<Signature>(&EXAMPLE_SIGNATURE).unwrap();
-    assert_eq!(EXAMPLE_SIGNATURE, signature.to_bytes());
-}
-
-#[cfg(feature = "serde_bytes")]
-#[test]
-fn test_serialize_bytes() {
-    use bincode::Options;
-
-    let signature = Signature::try_from(&EXAMPLE_SIGNATURE[..]).unwrap();
-
-    let mut encoded_signature = Vec::new();
-    let options = bincode::DefaultOptions::new()
-        .with_fixint_encoding()
-        .allow_trailing_bytes();
-    let mut serializer = bincode::Serializer::new(&mut encoded_signature, options);
-    serde_bytes::serialize(&signature, &mut serializer).unwrap();
-
-    let mut expected = Vec::from((Signature::BYTE_SIZE as u64).to_le_bytes());
-    expected.extend(&EXAMPLE_SIGNATURE[..]);
-    assert_eq!(&expected[..], &encoded_signature[..]);
-}
-
-#[cfg(feature = "serde_bytes")]
-#[test]
-fn test_deserialize_bytes() {
-    use bincode::Options;
-
-    let mut encoded_signature = Vec::from((Signature::BYTE_SIZE as u64).to_le_bytes());
-    encoded_signature.extend(&EXAMPLE_SIGNATURE[..]);
-
-    let options = bincode::DefaultOptions::new()
-        .with_fixint_encoding()
-        .allow_trailing_bytes();
-    let mut deserializer = bincode::de::Deserializer::from_slice(&encoded_signature[..], options);
-
-    let signature: Signature = serde_bytes::deserialize(&mut deserializer).unwrap();
-
-    assert_eq!(EXAMPLE_SIGNATURE, signature.to_bytes());
-}
diff --git a/ed448/Cargo.toml b/ed448/Cargo.toml
index b792d4b..2861820 100644
--- a/ed448/Cargo.toml
+++ b/ed448/Cargo.toml
@@ -28,7 +28,6 @@ zeroize = { version = "1", optional = true, default-features = false }
 
 [dev-dependencies]
 hex-literal = "1"
-bincode = "1"
 
 [features]
 default = ["alloc"]
diff --git a/ed448/src/serde.rs b/ed448/src/serde.rs
index eb9bd2d..3f13fc7 100644
--- a/ed448/src/serde.rs
+++ b/ed448/src/serde.rs
@@ -94,28 +94,3 @@ impl<'de> serde_bytes::Deserialize<'de> for Signature {
             .map(Into::into)
     }
 }
-
-#[cfg(test)]
-mod tests {
-    use crate::{Signature, SignatureBytes};
-    use hex_literal::hex;
-
-    const SIGNATURE_BYTES: SignatureBytes = hex!(
-        "533a37f6bbe457251f023c0d88f976ae
-        2dfb504a843e34d2074fd823d41a591f
-        2b233f034f628281f2fd7a22ddd47d78
-        28c59bd0a21bfd3980ff0d2028d4b18a
-        9df63e006c5d1c2d345b925d8dc00b41
-        04852db99ac5c7cdda8530a113a0f4db
-        b61149f05a7363268c71d95808ff2e65
-        2600"
-    );
-
-    #[test]
-    fn round_trip() {
-        let signature = Signature::from_bytes(&SIGNATURE_BYTES);
-        let serialized = bincode::serialize(&signature).expect("serialized");
-        let deserialized = bincode::deserialize(&serialized).expect("deserialized");
-        assert_eq!(signature, deserialized);
-    }
-}
diff --git a/ed448/tests/serde.rs b/ed448/tests/serde.rs
deleted file mode 100644
index 254a7a6..0000000
--- a/ed448/tests/serde.rs
+++ /dev/null
@@ -1,24 +0,0 @@
-//! Tests for serde serializers/deserializers
-
-#![cfg(feature = "serde")]
-
-use ed448::{Signature, SignatureBytes};
-use hex_literal::hex;
-
-const EXAMPLE_SIGNATURE: SignatureBytes = hex!(
-    "3f3e3d3c3b3a393837363534333231302f2e2d2c2b2a292827262524232221201f1e1d1c1b1a191817161514131211100f0e0d0c0b0a090807"
-    "1f1e1d1c1b1a191817161514131211100f0e0d0c0b0a09080706050403020100fffefdfcfbfaf9f8f7f6f5f4f3f2f1f0efeeedecebeae9e8e7"
-);
-
-#[test]
-fn test_serialize() {
-    let signature = Signature::try_from(&EXAMPLE_SIGNATURE[..]).unwrap();
-    let encoded_signature: Vec<u8> = bincode::serialize(&signature).unwrap();
-    assert_eq!(&EXAMPLE_SIGNATURE[..], &encoded_signature[..]);
-}
-
-#[test]
-fn test_deserialize() {
-    let signature = bincode::deserialize::<Signature>(&EXAMPLE_SIGNATURE).unwrap();
-    assert_eq!(EXAMPLE_SIGNATURE, signature.to_bytes());
-}