diff --git a/src/de/enum_.rs b/src/de/enum_.rs
index 2c3c6eb6..b620491f 100644
--- a/src/de/enum_.rs
+++ b/src/de/enum_.rs
@@ -12,7 +12,7 @@ impl<'a, 'b, 's> UnitVariantAccess<'a, 'b, 's> {
     }
 }
 
-impl<'a, 'de, 's> de::EnumAccess<'de> for UnitVariantAccess<'a, 'de, 's> {
+impl<'de> de::EnumAccess<'de> for UnitVariantAccess<'_, 'de, '_> {
     type Error = Error;
     type Variant = Self;
 
@@ -25,7 +25,7 @@ impl<'a, 'de, 's> de::EnumAccess<'de> for UnitVariantAccess<'a, 'de, 's> {
     }
 }
 
-impl<'de, 'a, 's> de::VariantAccess<'de> for UnitVariantAccess<'a, 'de, 's> {
+impl<'de> de::VariantAccess<'de> for UnitVariantAccess<'_, 'de, '_> {
     type Error = Error;
 
     fn unit_variant(self) -> Result<()> {
@@ -64,7 +64,7 @@ impl<'a, 'b, 's> VariantAccess<'a, 'b, 's> {
     }
 }
 
-impl<'a, 'de, 's> de::EnumAccess<'de> for VariantAccess<'a, 'de, 's> {
+impl<'de> de::EnumAccess<'de> for VariantAccess<'_, 'de, '_> {
     type Error = Error;
     type Variant = Self;
 
@@ -78,7 +78,7 @@ impl<'a, 'de, 's> de::EnumAccess<'de> for VariantAccess<'a, 'de, 's> {
     }
 }
 
-impl<'de, 'a, 's> de::VariantAccess<'de> for VariantAccess<'a, 'de, 's> {
+impl<'de> de::VariantAccess<'de> for VariantAccess<'_, 'de, '_> {
     type Error = Error;
 
     fn unit_variant(self) -> Result<()> {
diff --git a/src/de/map.rs b/src/de/map.rs
index c38c81d8..bcf90322 100644
--- a/src/de/map.rs
+++ b/src/de/map.rs
@@ -13,7 +13,7 @@ impl<'a, 'b, 's> MapAccess<'a, 'b, 's> {
     }
 }
 
-impl<'a, 'de, 's> de::MapAccess<'de> for MapAccess<'a, 'de, 's> {
+impl<'de> de::MapAccess<'de> for MapAccess<'_, 'de, '_> {
     type Error = Error;
 
     fn next_key_seed<K>(&mut self, seed: K) -> Result<Option<K::Value>, Error>
@@ -61,7 +61,7 @@ struct MapKey<'a, 'b, 's> {
     de: &'a mut Deserializer<'b, 's>,
 }
 
-impl<'de, 'a, 's> de::Deserializer<'de> for MapKey<'a, 'de, 's> {
+impl<'de> de::Deserializer<'de> for MapKey<'_, 'de, '_> {
     type Error = Error;
 
     fn deserialize_any<V>(self, _visitor: V) -> Result<V::Value, Error>
diff --git a/src/de/mod.rs b/src/de/mod.rs
index 88e8fc2f..64d4eeda 100644
--- a/src/de/mod.rs
+++ b/src/de/mod.rs
@@ -381,7 +381,7 @@ macro_rules! deserialize_fromstr {
     }};
 }
 
-impl<'a, 'de, 's> de::Deserializer<'de> for &'a mut Deserializer<'de, 's> {
+impl<'de> de::Deserializer<'de> for &mut Deserializer<'de, '_> {
     type Error = Error;
 
     /// Unsupported. Can’t parse a value without knowing its expected type.
@@ -608,7 +608,7 @@ impl<'a, 'de, 's> de::Deserializer<'de> for &'a mut Deserializer<'de, 's> {
 
             struct EscapedStringDeserializer<'a, 'de, 's>(&'a mut Deserializer<'de, 's>);
 
-            impl<'a, 'de, 's> serde::Deserializer<'de> for EscapedStringDeserializer<'a, 'de, 's> {
+            impl<'de> serde::Deserializer<'de> for EscapedStringDeserializer<'_, 'de, '_> {
                 type Error = Error;
 
                 fn deserialize_any<V>(self, visitor: V) -> Result<V::Value>
diff --git a/src/de/seq.rs b/src/de/seq.rs
index 1470a5af..ad2d92a6 100644
--- a/src/de/seq.rs
+++ b/src/de/seq.rs
@@ -13,7 +13,7 @@ impl<'a, 'b, 's> SeqAccess<'a, 'b, 's> {
     }
 }
 
-impl<'a, 'de, 's> de::SeqAccess<'de> for SeqAccess<'a, 'de, 's> {
+impl<'de> de::SeqAccess<'de> for SeqAccess<'_, 'de, '_> {
     type Error = Error;
 
     fn next_element_seed<T>(&mut self, seed: T) -> Result<Option<T::Value>>
diff --git a/src/lib.rs b/src/lib.rs
index 9a20a807..5e8b9220 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -16,7 +16,7 @@
 //!
 //! // Serialized JSON data can be easily deserialized into Rust types.
 //! let message = b"{\"value\":10,\"message\":\"Hello, World!\"}";
-//! let (data, _remainder) = serde_json_core::from_slice::<Data<'_>>(message).unwrap();
+//! let (data, _consumed) = serde_json_core::from_slice::<Data<'_>>(message).unwrap();
 //! assert_eq!(data.value, 10);
 //! assert_eq!(data.message, "Hello, World!");
 //!
diff --git a/src/ser/mod.rs b/src/ser/mod.rs
index 74db6e09..273072f2 100644
--- a/src/ser/mod.rs
+++ b/src/ser/mod.rs
@@ -651,7 +651,7 @@ impl<'a, 'b> StringCollector<'a, 'b> {
     }
 }
 
-impl<'a, 'b> fmt::Write for StringCollector<'a, 'b> {
+impl fmt::Write for StringCollector<'_, '_> {
     fn write_str(&mut self, s: &str) -> fmt::Result {
         self.do_write_str(s).or(Err(fmt::Error))
     }