diff --git a/src/keys/ed25519.rs b/src/keys/ed25519.rs
index 2a691ba..8b77b66 100644
--- a/src/keys/ed25519.rs
+++ b/src/keys/ed25519.rs
@@ -29,7 +29,7 @@ impl EnrKey for ed25519::Keypair {
     fn enr_to_public(content: &BTreeMap<Key, Vec<u8>>) -> Result<Self::PublicKey, DecoderError> {
         let pubkey_bytes = content
             .get(ENR_KEY.as_bytes())
-            .ok_or_else(|| DecoderError::Custom("Unknown signature"))?;
+            .ok_or(DecoderError::Custom("Unknown signature"))?;
 
         // Decode the RLP
         let pubkey_bytes = rlp::Rlp::new(pubkey_bytes).data()?;
diff --git a/src/keys/k256_key.rs b/src/keys/k256_key.rs
index 792782b..c198016 100644
--- a/src/keys/k256_key.rs
+++ b/src/keys/k256_key.rs
@@ -37,7 +37,7 @@ impl EnrKey for SigningKey {
     fn enr_to_public(content: &BTreeMap<Key, Vec<u8>>) -> Result<Self::PublicKey, DecoderError> {
         let pubkey_bytes = content
             .get(ENR_KEY.as_bytes())
-            .ok_or_else(|| DecoderError::Custom("Unknown signature"))?;
+            .ok_or(DecoderError::Custom("Unknown signature"))?;
 
         // Decode the RLP
         let pubkey_bytes = rlp::Rlp::new(pubkey_bytes).data()?;
diff --git a/src/keys/libsecp256k1.rs b/src/keys/libsecp256k1.rs
index 7acd41b..8dfcdc8 100644
--- a/src/keys/libsecp256k1.rs
+++ b/src/keys/libsecp256k1.rs
@@ -33,7 +33,7 @@ impl EnrKey for secp256k1::SecretKey {
     fn enr_to_public(content: &BTreeMap<Key, Vec<u8>>) -> Result<Self::PublicKey, DecoderError> {
         let pubkey_bytes = content
             .get(ENR_KEY.as_bytes())
-            .ok_or_else(|| DecoderError::Custom("Unknown signature"))?;
+            .ok_or(DecoderError::Custom("Unknown signature"))?;
 
         // Decode the RLP
         let pubkey_bytes = rlp::Rlp::new(pubkey_bytes).data()?;
diff --git a/src/keys/rust_secp256k1.rs b/src/keys/rust_secp256k1.rs
index 22b2231..ca15a1c 100644
--- a/src/keys/rust_secp256k1.rs
+++ b/src/keys/rust_secp256k1.rs
@@ -26,7 +26,7 @@ impl EnrKey for c_secp256k1::SecretKey {
     fn enr_to_public(content: &BTreeMap<Key, Vec<u8>>) -> Result<Self::PublicKey, DecoderError> {
         let pubkey_bytes = content
             .get(ENR_KEY.as_bytes())
-            .ok_or_else(|| DecoderError::Custom("Unknown signature"))?;
+            .ok_or(DecoderError::Custom("Unknown signature"))?;
         // Decode the RLP
         let pubkey_bytes = rlp::Rlp::new(pubkey_bytes).data()?;
 
diff --git a/src/lib.rs b/src/lib.rs
index 6119619..c8d46e7 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -170,7 +170,11 @@
 //! [`get`]: struct.Enr.html#method.get
 
 #![warn(clippy::all, clippy::pedantic, clippy::nursery)]
-#![allow(clippy::missing_errors_doc, clippy::module_name_repetitions)]
+#![allow(
+    clippy::map_err_ignore,
+    clippy::missing_errors_doc,
+    clippy::module_name_repetitions
+)]
 
 mod builder;
 mod keys;
@@ -523,7 +527,7 @@ impl<K: EnrKey> Enr<K> {
         self.seq = self
             .seq
             .checked_add(1)
-            .ok_or_else(|| EnrError::SequenceNumberTooHigh)?;
+            .ok_or(EnrError::SequenceNumberTooHigh)?;
 
         // sign the record
         self.sign(enr_key)?;
@@ -700,7 +704,7 @@ impl<K: EnrKey> Enr<K> {
         self.seq = self
             .seq
             .checked_add(1)
-            .ok_or_else(|| EnrError::SequenceNumberTooHigh)?;
+            .ok_or(EnrError::SequenceNumberTooHigh)?;
 
         // sign the record
         self.sign(key)?;