diff --git a/parity-crypto/CHANGELOG.md b/parity-crypto/CHANGELOG.md
index 42a24d6a5..2d8a372c0 100644
--- a/parity-crypto/CHANGELOG.md
+++ b/parity-crypto/CHANGELOG.md
@@ -8,6 +8,7 @@ The format is based on [Keep a Changelog].
 ### Breaking
 - Bump `rust-secp256k1` to v0.19, always allow zero signatures. [#438](https://github.com/paritytech/parity-common/pull/438)
 - Updated `rlp` to 0.5. [#463](https://github.com/paritytech/parity-common/pull/463)
+- Remove deprecated trait impls `FromStr`/`TryFrom` for `Secret` [#495](https://github.com/paritytech/parity-common/pull/495)
 
 ## [0.6.2] - 2020-06-19
 - Put `Secret` memory on heap. [#400](https://github.com/paritytech/parity-common/pull/400)
diff --git a/parity-crypto/src/publickey/secret_key.rs b/parity-crypto/src/publickey/secret_key.rs
index 269afdf3e..80a37a590 100644
--- a/parity-crypto/src/publickey/secret_key.rs
+++ b/parity-crypto/src/publickey/secret_key.rs
@@ -138,7 +138,7 @@ impl Secret {
 	pub fn dec(&mut self) -> Result<(), Error> {
 		match self.is_zero() {
 			true => {
-				*self = Secret::try_from(super::MINUS_ONE_KEY)
+				*self = Self::copy_from_slice(&super::MINUS_ONE_KEY)
 					.expect("Constructing a secret key from a known-good constant works; qed.");
 				Ok(())
 			}
@@ -213,14 +213,6 @@ impl Secret {
 	}
 }
 
-#[deprecated(since = "0.6.2", note = "please use `copy_from_str` instead, input is not zeroized")]
-impl FromStr for Secret {
-	type Err = Error;
-	fn from_str(s: &str) -> Result<Self, Self::Err> {
-		Ok(H256::from_str(s).map_err(|e| Error::Custom(format!("{:?}", e)))?.into())
-	}
-}
-
 impl From<[u8; 32]> for Secret {
 	#[inline(always)]
 	fn from(mut k: [u8; 32]) -> Self {
@@ -239,27 +231,6 @@ impl From<H256> for Secret {
 	}
 }
 
-#[deprecated(since = "0.6.2", note = "please use `copy_from_str` instead, input is not zeroized")]
-impl TryFrom<&str> for Secret {
-	type Error = Error;
-
-	fn try_from(s: &str) -> Result<Self, Error> {
-		s.parse().map_err(|e| Error::Custom(format!("{:?}", e)))
-	}
-}
-
-#[deprecated(since = "0.6.2", note = "please use `copy_from_slice` instead, input is not zeroized")]
-impl TryFrom<&[u8]> for Secret {
-	type Error = Error;
-
-	fn try_from(b: &[u8]) -> Result<Self, Error> {
-		if b.len() != SECP256K1_SECRET_KEY_SIZE {
-			return Err(Error::InvalidSecretKey);
-		}
-		Ok(Self { inner: Box::new(H256::from_slice(b)) })
-	}
-}
-
 impl From<key::SecretKey> for Secret {
 	#[inline(always)]
 	fn from(key: key::SecretKey) -> Self {