diff --git a/juniper/src/ast.rs b/juniper/src/ast.rs
index 3a3c4de3..2a0d238a 100644
--- a/juniper/src/ast.rs
+++ b/juniper/src/ast.rs
@@ -194,7 +194,7 @@ pub trait ToInputValue<S = DefaultScalarValue>: Sized {
     fn to_input_value(&self) -> InputValue<S>;
 }
 
-impl<'a> Type<'a> {
+impl Type<'_> {
     /// Get the name of a named type.
     ///
     /// Only applies to named types; lists will return `None`.
@@ -221,7 +221,7 @@ impl<'a> Type<'a> {
     }
 }
 
-impl<'a> fmt::Display for Type<'a> {
+impl fmt::Display for Type<'_> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self {
             Self::Named(n) => write!(f, "{n}"),
diff --git a/juniper/src/executor/look_ahead.rs b/juniper/src/executor/look_ahead.rs
index bc25c3c1..cd92ed78 100644
--- a/juniper/src/executor/look_ahead.rs
+++ b/juniper/src/executor/look_ahead.rs
@@ -93,17 +93,17 @@ pub struct LookAheadList<'a, S> {
 }
 
 // Implemented manually to omit redundant `S: Clone` trait bound, imposed by `#[derive(Clone)]`.
-impl<'a, S> Clone for LookAheadList<'a, S> {
+impl<S> Clone for LookAheadList<'_, S> {
     fn clone(&self) -> Self {
         *self
     }
 }
 
 // Implemented manually to omit redundant `S: Copy` trait bound, imposed by `#[derive(Copy)]`.
-impl<'a, S> Copy for LookAheadList<'a, S> {}
+impl<S> Copy for LookAheadList<'_, S> {}
 
 // Implemented manually to omit redundant `S: Default` trait bound, imposed by `#[derive(Default)]`.
-impl<'a, S> Default for LookAheadList<'a, S> {
+impl<S> Default for LookAheadList<'_, S> {
     fn default() -> Self {
         Self {
             input_list: &[],
@@ -114,13 +114,13 @@ impl<'a, S> Default for LookAheadList<'a, S> {
 
 // Implemented manually to omit redundant `S: PartialEq` trait bound, imposed by
 // `#[derive(PartialEq)]`.
-impl<'a, S: ScalarValue> PartialEq for LookAheadList<'a, S> {
+impl<S: ScalarValue> PartialEq for LookAheadList<'_, S> {
     fn eq(&self, other: &Self) -> bool {
         self.iter().eq(other.iter())
     }
 }
 
-impl<'a, S: ScalarValue> LookAheadList<'a, S> {
+impl<S: ScalarValue> LookAheadList<'_, S> {
     /// Returns an [`Iterator`] over the items of this [list].
     ///
     /// [list]: https://spec.graphql.org/October2021#sec-List
@@ -179,7 +179,7 @@ pub mod look_ahead_list {
         }
     }
 
-    impl<'a, S: ScalarValue> DoubleEndedIterator for Iter<'a, S> {
+    impl<S: ScalarValue> DoubleEndedIterator for Iter<'_, S> {
         fn next_back(&mut self) -> Option<Self::Item> {
             let vars = self.vars;
             self.slice_iter
@@ -203,16 +203,16 @@ pub struct LookAheadObject<'a, S> {
 }
 
 // Implemented manually to omit redundant `S: Clone` trait bound, imposed by `#[derive(Clone)]`.
-impl<'a, S> Clone for LookAheadObject<'a, S> {
+impl<S> Clone for LookAheadObject<'_, S> {
     fn clone(&self) -> Self {
         *self
     }
 }
 
 // Implemented manually to omit redundant `S: Copy` trait bound, imposed by `#[derive(Copy)]`.
-impl<'a, S> Copy for LookAheadObject<'a, S> {}
+impl<S> Copy for LookAheadObject<'_, S> {}
 
-impl<'a, S> Default for LookAheadObject<'a, S> {
+impl<S> Default for LookAheadObject<'_, S> {
     fn default() -> Self {
         Self {
             input_object: &[],
@@ -221,13 +221,13 @@ impl<'a, S> Default for LookAheadObject<'a, S> {
     }
 }
 
-impl<'a, S: ScalarValue> PartialEq for LookAheadObject<'a, S> {
+impl<S: ScalarValue> PartialEq for LookAheadObject<'_, S> {
     fn eq(&self, other: &Self) -> bool {
         self.iter().eq(other.iter())
     }
 }
 
-impl<'a, S: ScalarValue> LookAheadObject<'a, S> {
+impl<S: ScalarValue> LookAheadObject<'_, S> {
     /// Returns an [`Iterator`] over this [input object]'s fields.
     ///
     /// [input object]: https://spec.graphql.org/October2021#sec-Input-Objects
@@ -301,7 +301,7 @@ pub mod look_ahead_object {
         }
     }
 
-    impl<'a, S: ScalarValue> DoubleEndedIterator for Iter<'a, S> {
+    impl<S: ScalarValue> DoubleEndedIterator for Iter<'_, S> {
         fn next_back(&mut self) -> Option<Self::Item> {
             let vars = self.vars;
             self.slice_iter.next_back().map(move |(key, val)| {
@@ -331,14 +331,14 @@ pub struct LookAheadArgument<'a, S> {
 }
 
 // Implemented manually to omit redundant `S: Clone` trait bound, imposed by `#[derive(Clone)]`.
-impl<'a, S> Clone for LookAheadArgument<'a, S> {
+impl<S> Clone for LookAheadArgument<'_, S> {
     fn clone(&self) -> Self {
         *self
     }
 }
 
 // Implemented manually to omit redundant `S: Copy` trait bound, imposed by `#[derive(Copy)]`.
-impl<'a, S> Copy for LookAheadArgument<'a, S> {}
+impl<S> Copy for LookAheadArgument<'_, S> {}
 
 impl<'a, S> LookAheadArgument<'a, S> {
     /// Returns the name of this [argument].
@@ -386,7 +386,7 @@ pub struct LookAheadChildren<'a, S> {
 }
 
 // Implemented manually to omit redundant `S: Clone` trait bound, imposed by `#[derive(Clone)]`.
-impl<'a, S> Clone for LookAheadChildren<'a, S> {
+impl<S> Clone for LookAheadChildren<'_, S> {
     fn clone(&self) -> Self {
         Self {
             children: self.children.clone(),
@@ -395,7 +395,7 @@ impl<'a, S> Clone for LookAheadChildren<'a, S> {
 }
 
 // Implemented manually to omit redundant `S: Default` trait bound, imposed by `#[derive(Default)]`.
-impl<'a, S> Default for LookAheadChildren<'a, S> {
+impl<S> Default for LookAheadChildren<'_, S> {
     fn default() -> Self {
         Self { children: vec![] }
     }
@@ -472,14 +472,14 @@ pub(super) enum SelectionSource<'a, S> {
 }
 
 // Implemented manually to omit redundant `S: Clone` trait bound, imposed by `#[derive(Clone)]`.
-impl<'a, S> Clone for SelectionSource<'a, S> {
+impl<S> Clone for SelectionSource<'_, S> {
     fn clone(&self) -> Self {
         *self
     }
 }
 
 // Implemented manually to omit redundant `S: Copy` trait bound, imposed by `#[derive(Copy)]`.
-impl<'a, S> Copy for SelectionSource<'a, S> {}
+impl<S> Copy for SelectionSource<'_, S> {}
 
 /// [Selection] of an executed GraphQL query, used in [look-ahead][0] operations.
 ///
@@ -496,14 +496,14 @@ pub struct LookAheadSelection<'a, S> {
 }
 
 // Implemented manually to omit redundant `S: Clone` trait bound, imposed by `#[derive(Clone)]`.
-impl<'a, S> Clone for LookAheadSelection<'a, S> {
+impl<S> Clone for LookAheadSelection<'_, S> {
     fn clone(&self) -> Self {
         *self
     }
 }
 
 // Implemented manually to omit redundant `S: Copy` trait bound, imposed by `#[derive(Copy)]`.
-impl<'a, S> Copy for LookAheadSelection<'a, S> {}
+impl<S> Copy for LookAheadSelection<'_, S> {}
 
 impl<'a, S> LookAheadSelection<'a, S> {
     /// Constructs a new [`LookAheadSelection`] out of the provided params.
@@ -670,7 +670,7 @@ struct ChildrenBuilder<'a, 'f, S> {
     output: Vec<LookAheadSelection<'a, S>>,
 }
 
-impl<'a, 'f, S: ScalarValue> ChildrenBuilder<'a, 'f, S> {
+impl<'a, S: ScalarValue> ChildrenBuilder<'a, '_, S> {
     fn visit_parent_selection(
         &mut self,
         selection: &'a Selection<'a, S>,
diff --git a/juniper/src/executor/mod.rs b/juniper/src/executor/mod.rs
index d091bbf8..0e85a41c 100644
--- a/juniper/src/executor/mod.rs
+++ b/juniper/src/executor/mod.rs
@@ -273,7 +273,7 @@ impl<S> IntoFieldError<S> for std::convert::Infallible {
     }
 }
 
-impl<'a, S> IntoFieldError<S> for &'a str {
+impl<S> IntoFieldError<S> for &str {
     fn into_field_error(self) -> FieldError<S> {
         FieldError::<S>::from(self)
     }
@@ -285,7 +285,7 @@ impl<S> IntoFieldError<S> for String {
     }
 }
 
-impl<'a, S> IntoFieldError<S> for Cow<'a, str> {
+impl<S> IntoFieldError<S> for Cow<'_, str> {
     fn into_field_error(self) -> FieldError<S> {
         FieldError::<S>::from(self)
     }
@@ -403,7 +403,7 @@ pub trait FromContext<T> {
 /// Marker trait for types that can act as context objects for `GraphQL` types.
 pub trait Context {}
 
-impl<'a, C: Context> Context for &'a C {}
+impl<C: Context> Context for &C {}
 
 static NULL_CONTEXT: () = ();
 
@@ -755,7 +755,7 @@ where
     }
 }
 
-impl<'a> FieldPath<'a> {
+impl FieldPath<'_> {
     fn construct_path(&self, acc: &mut Vec<String>) {
         match self {
             FieldPath::Root(_) => (),
diff --git a/juniper/src/executor/owned_executor.rs b/juniper/src/executor/owned_executor.rs
index cce1a208..64105823 100644
--- a/juniper/src/executor/owned_executor.rs
+++ b/juniper/src/executor/owned_executor.rs
@@ -25,7 +25,7 @@ pub struct OwnedExecutor<'a, CtxT, S> {
     pub(super) field_path: Arc<FieldPath<'a>>,
 }
 
-impl<'a, CtxT, S> Clone for OwnedExecutor<'a, CtxT, S>
+impl<CtxT, S> Clone for OwnedExecutor<'_, CtxT, S>
 where
     S: Clone,
 {
diff --git a/juniper/src/integrations/serde.rs b/juniper/src/integrations/serde.rs
index 5080cffd..f77202f0 100644
--- a/juniper/src/integrations/serde.rs
+++ b/juniper/src/integrations/serde.rs
@@ -289,7 +289,7 @@ impl<'de> Deserialize<'de> for DefaultScalarValue {
     fn deserialize<D: Deserializer<'de>>(de: D) -> Result<Self, D::Error> {
         struct Visitor;
 
-        impl<'de> de::Visitor<'de> for Visitor {
+        impl de::Visitor<'_> for Visitor {
             type Value = DefaultScalarValue;
 
             fn expecting(&self, f: &mut fmt::Formatter) -> fmt::Result {
diff --git a/juniper/src/macros/reflect.rs b/juniper/src/macros/reflect.rs
index 642ccf4a..980d57ab 100644
--- a/juniper/src/macros/reflect.rs
+++ b/juniper/src/macros/reflect.rs
@@ -44,11 +44,11 @@ pub trait BaseType<S> {
     const NAME: Type;
 }
 
-impl<'a, S, T: BaseType<S> + ?Sized> BaseType<S> for &'a T {
+impl<S, T: BaseType<S> + ?Sized> BaseType<S> for &T {
     const NAME: Type = T::NAME;
 }
 
-impl<'ctx, S, T> BaseType<S> for (&'ctx T::Context, T)
+impl<S, T> BaseType<S> for (&T::Context, T)
 where
     S: ScalarValue,
     T: BaseType<S> + GraphQLValue<S>,
@@ -105,11 +105,11 @@ pub trait BaseSubTypes<S> {
     const NAMES: Types;
 }
 
-impl<'a, S, T: BaseSubTypes<S> + ?Sized> BaseSubTypes<S> for &'a T {
+impl<S, T: BaseSubTypes<S> + ?Sized> BaseSubTypes<S> for &T {
     const NAMES: Types = T::NAMES;
 }
 
-impl<'ctx, S, T> BaseSubTypes<S> for (&'ctx T::Context, T)
+impl<S, T> BaseSubTypes<S> for (&T::Context, T)
 where
     S: ScalarValue,
     T: BaseSubTypes<S> + GraphQLValue<S>,
@@ -205,7 +205,7 @@ pub trait WrappedType<S> {
     const VALUE: WrappedValue;
 }
 
-impl<'ctx, S, T: WrappedType<S>> WrappedType<S> for (&'ctx T::Context, T)
+impl<S, T: WrappedType<S>> WrappedType<S> for (&T::Context, T)
 where
     S: ScalarValue,
     T: GraphQLValue<S>,
@@ -237,7 +237,7 @@ impl<S, T: WrappedType<S>, const N: usize> WrappedType<S> for [T; N] {
     const VALUE: u128 = T::VALUE * 10 + 3;
 }
 
-impl<'a, S, T: WrappedType<S> + ?Sized> WrappedType<S> for &'a T {
+impl<S, T: WrappedType<S> + ?Sized> WrappedType<S> for &T {
     const VALUE: u128 = T::VALUE;
 }
 
diff --git a/juniper/src/parser/lexer.rs b/juniper/src/parser/lexer.rs
index a8b0cfa8..5dce84da 100644
--- a/juniper/src/parser/lexer.rs
+++ b/juniper/src/parser/lexer.rs
@@ -477,7 +477,7 @@ impl<'a> Iterator for Lexer<'a> {
     }
 }
 
-impl<'a> fmt::Display for Token<'a> {
+impl fmt::Display for Token<'_> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match *self {
             Token::Name(name) => write!(f, "{name}"),
diff --git a/juniper/src/schema/meta.rs b/juniper/src/schema/meta.rs
index f7673cd9..d41a581a 100644
--- a/juniper/src/schema/meta.rs
+++ b/juniper/src/schema/meta.rs
@@ -181,7 +181,7 @@ pub struct Field<'a, S> {
     pub deprecation_status: DeprecationStatus,
 }
 
-impl<'a, S> Field<'a, S> {
+impl<S> Field<'_, S> {
     /// Returns true if the type is built-in to GraphQL.
     pub fn is_builtin(&self) -> bool {
         // "used exclusively by GraphQL’s introspection system"
@@ -202,7 +202,7 @@ pub struct Argument<'a, S> {
     pub default_value: Option<InputValue<S>>,
 }
 
-impl<'a, S> Argument<'a, S> {
+impl<S> Argument<'_, S> {
     /// Returns true if the type is built-in to GraphQL.
     pub fn is_builtin(&self) -> bool {
         // "used exclusively by GraphQL’s introspection system"
@@ -770,7 +770,7 @@ impl EnumValue {
     }
 }
 
-impl<'a, S: fmt::Debug> fmt::Debug for ScalarMeta<'a, S> {
+impl<S: fmt::Debug> fmt::Debug for ScalarMeta<'_, S> {
     fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
         fmt.debug_struct("ScalarMeta")
             .field("name", &self.name)
@@ -779,7 +779,7 @@ impl<'a, S: fmt::Debug> fmt::Debug for ScalarMeta<'a, S> {
     }
 }
 
-impl<'a, S: fmt::Debug> fmt::Debug for EnumMeta<'a, S> {
+impl<S: fmt::Debug> fmt::Debug for EnumMeta<'_, S> {
     fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
         fmt.debug_struct("EnumMeta")
             .field("name", &self.name)
@@ -789,7 +789,7 @@ impl<'a, S: fmt::Debug> fmt::Debug for EnumMeta<'a, S> {
     }
 }
 
-impl<'a, S: fmt::Debug> fmt::Debug for InputObjectMeta<'a, S> {
+impl<S: fmt::Debug> fmt::Debug for InputObjectMeta<'_, S> {
     fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
         fmt.debug_struct("InputObjectMeta")
             .field("name", &self.name)
diff --git a/juniper/src/schema/model.rs b/juniper/src/schema/model.rs
index 75b216a7..9ee0b0cf 100644
--- a/juniper/src/schema/model.rs
+++ b/juniper/src/schema/model.rs
@@ -56,7 +56,7 @@ pub struct SchemaType<'a, S> {
     directives: FnvHashMap<String, DirectiveType<'a, S>>,
 }
 
-impl<'a, S> Context for SchemaType<'a, S> {}
+impl<S> Context for SchemaType<'_, S> {}
 
 #[derive(Clone)]
 pub enum TypeType<'a, S: 'a> {
@@ -96,8 +96,8 @@ pub enum DirectiveLocation {
     EnumValue,
 }
 
-impl<'a, QueryT, MutationT, SubscriptionT>
-    RootNode<'a, QueryT, MutationT, SubscriptionT, DefaultScalarValue>
+impl<QueryT, MutationT, SubscriptionT>
+    RootNode<'_, QueryT, MutationT, SubscriptionT, DefaultScalarValue>
 where
     QueryT: GraphQLType<DefaultScalarValue, TypeInfo = ()>,
     MutationT: GraphQLType<DefaultScalarValue, TypeInfo = ()>,
@@ -683,7 +683,7 @@ impl fmt::Display for DirectiveLocation {
     }
 }
 
-impl<'a, S> fmt::Display for TypeType<'a, S> {
+impl<S> fmt::Display for TypeType<'_, S> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match self {
             Self::Concrete(t) => f.write_str(t.name().unwrap()),
diff --git a/juniper/src/schema/schema.rs b/juniper/src/schema/schema.rs
index 9ec47e33..fe619dc5 100644
--- a/juniper/src/schema/schema.rs
+++ b/juniper/src/schema/schema.rs
@@ -17,8 +17,8 @@ use crate::schema::{
     model::{DirectiveLocation, DirectiveType, RootNode, SchemaType, TypeType},
 };
 
-impl<'a, S, QueryT, MutationT, SubscriptionT> GraphQLType<S>
-    for RootNode<'a, QueryT, MutationT, SubscriptionT, S>
+impl<S, QueryT, MutationT, SubscriptionT> GraphQLType<S>
+    for RootNode<'_, QueryT, MutationT, SubscriptionT, S>
 where
     S: ScalarValue,
     QueryT: GraphQLType<S>,
@@ -37,8 +37,8 @@ where
     }
 }
 
-impl<'a, S, QueryT, MutationT, SubscriptionT> GraphQLValue<S>
-    for RootNode<'a, QueryT, MutationT, SubscriptionT, S>
+impl<S, QueryT, MutationT, SubscriptionT> GraphQLValue<S>
+    for RootNode<'_, QueryT, MutationT, SubscriptionT, S>
 where
     S: ScalarValue,
     QueryT: GraphQLType<S>,
diff --git a/juniper/src/types/containers.rs b/juniper/src/types/containers.rs
index 108f0e02..76e5c8f8 100644
--- a/juniper/src/types/containers.rs
+++ b/juniper/src/types/containers.rs
@@ -277,7 +277,7 @@ where
     }
 }
 
-impl<'a, T, S> ToInputValue<S> for &'a [T]
+impl<T, S> ToInputValue<S> for &[T]
 where
     T: ToInputValue<S>,
     S: ScalarValue,
diff --git a/juniper/src/types/pointers.rs b/juniper/src/types/pointers.rs
index 17e70679..9bf74be3 100644
--- a/juniper/src/types/pointers.rs
+++ b/juniper/src/types/pointers.rs
@@ -110,7 +110,7 @@ where
     }
 }
 
-impl<'e, S, T> GraphQLType<S> for &'e T
+impl<S, T> GraphQLType<S> for &T
 where
     T: GraphQLType<S> + ?Sized,
     S: ScalarValue,
@@ -127,7 +127,7 @@ where
     }
 }
 
-impl<'e, S, T> GraphQLValue<S> for &'e T
+impl<S, T> GraphQLValue<S> for &T
 where
     S: ScalarValue,
     T: GraphQLValue<S> + ?Sized,
@@ -169,7 +169,7 @@ where
     }
 }
 
-impl<'e, S, T> GraphQLValueAsync<S> for &'e T
+impl<S, T> GraphQLValueAsync<S> for &T
 where
     T: GraphQLValueAsync<S> + ?Sized,
     T::TypeInfo: Sync,
@@ -196,7 +196,7 @@ where
     }
 }
 
-impl<'a, T, S> ToInputValue<S> for &'a T
+impl<T, S> ToInputValue<S> for &T
 where
     S: fmt::Debug,
     T: ToInputValue<S>,
diff --git a/juniper/src/types/scalars.rs b/juniper/src/types/scalars.rs
index 960b3aeb..8faf82a6 100644
--- a/juniper/src/types/scalars.rs
+++ b/juniper/src/types/scalars.rs
@@ -250,7 +250,7 @@ where
     }
 }
 
-impl<'a, S> ToInputValue<S> for &'a str
+impl<S> ToInputValue<S> for &str
 where
     S: ScalarValue,
 {
diff --git a/juniper/src/validation/input_value.rs b/juniper/src/validation/input_value.rs
index 1c906bbb..f4312c82 100644
--- a/juniper/src/validation/input_value.rs
+++ b/juniper/src/validation/input_value.rs
@@ -360,7 +360,7 @@ fn unification_error(
     )
 }
 
-impl<'a> fmt::Display for Path<'a> {
+impl fmt::Display for Path<'_> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match *self {
             Path::Root => write!(f, ""),
diff --git a/juniper/src/validation/multi_visitor.rs b/juniper/src/validation/multi_visitor.rs
index f6311668..34163d43 100644
--- a/juniper/src/validation/multi_visitor.rs
+++ b/juniper/src/validation/multi_visitor.rs
@@ -28,7 +28,7 @@ impl<A, B> MultiVisitorCons<A, B> {
     }
 }
 
-impl<'a, S> Visitor<'a, S> for MultiVisitorNil where S: ScalarValue {}
+impl<S> Visitor<'_, S> for MultiVisitorNil where S: ScalarValue {}
 
 impl<'a, A, B, S> Visitor<'a, S> for MultiVisitorCons<A, B>
 where
diff --git a/juniper_codegen/src/common/parse/mod.rs b/juniper_codegen/src/common/parse/mod.rs
index 642a050f..487e0552 100644
--- a/juniper_codegen/src/common/parse/mod.rs
+++ b/juniper_codegen/src/common/parse/mod.rs
@@ -47,7 +47,7 @@ pub(crate) trait ParseBufferExt {
         P: Default + Parse + Token;
 }
 
-impl<'a> ParseBufferExt for ParseBuffer<'a> {
+impl ParseBufferExt for ParseBuffer<'_> {
     fn try_parse<T: Default + Parse + Token>(&self) -> syn::Result<Option<T>> {
         Ok(if self.is_next::<T>() {
             Some(self.parse()?)
@@ -312,7 +312,7 @@ impl GenericsExt for syn::Generics {
 /// [`Type`]: syn::Type
 struct ReplaceWithDefaults<'a>(&'a syn::Generics);
 
-impl<'a> VisitMut for ReplaceWithDefaults<'a> {
+impl VisitMut for ReplaceWithDefaults<'_> {
     fn visit_generic_argument_mut(&mut self, arg: &mut syn::GenericArgument) {
         match arg {
             syn::GenericArgument::Lifetime(lf) => {
diff --git a/juniper_codegen/src/scalar_value/mod.rs b/juniper_codegen/src/scalar_value/mod.rs
index f590678c..8bb458a4 100644
--- a/juniper_codegen/src/scalar_value/mod.rs
+++ b/juniper_codegen/src/scalar_value/mod.rs
@@ -507,7 +507,7 @@ impl<'a> IsVariantGeneric<'a> {
     }
 }
 
-impl<'ast, 'gen> Visit<'ast> for IsVariantGeneric<'gen> {
+impl<'ast> Visit<'ast> for IsVariantGeneric<'_> {
     fn visit_path(&mut self, path: &'ast syn::Path) {
         if let Some(ident) = path.get_ident() {
             let is_generic = self.generics.params.iter().any(|par| {
diff --git a/juniper_rocket/src/lib.rs b/juniper_rocket/src/lib.rs
index 934047d1..8fa3e5b7 100644
--- a/juniper_rocket/src/lib.rs
+++ b/juniper_rocket/src/lib.rs
@@ -254,7 +254,7 @@ pub struct GraphQLContext<'f, S: ScalarValue> {
     errors: Errors<'f>,
 }
 
-impl<'f, S: ScalarValue> GraphQLContext<'f, S> {
+impl<S: ScalarValue> GraphQLContext<'_, S> {
     fn query(&mut self, value: String) {
         if self.query.is_some() {
             let error = Error::from(ErrorKind::Duplicate).with_name("query");
diff --git a/tests/codegen/fail/input-object/derive_incompatible_field_type.stderr b/tests/codegen/fail/input-object/derive_incompatible_field_type.stderr
index f5764d81..0edd0d09 100644
--- a/tests/codegen/fail/input-object/derive_incompatible_field_type.stderr
+++ b/tests/codegen/fail/input-object/derive_incompatible_field_type.stderr
@@ -68,9 +68,9 @@ error[E0277]: the trait bound `ObjectA: ToInputValue<_>` is not satisfied
   |          ^^^^^^^^^^^^^^^^^^ the trait `ToInputValue<_>` is not implemented for `ObjectA`
   |
   = help: the following other types implement trait `ToInputValue<S>`:
-            `&'a T` implements `ToInputValue<S>`
-            `&'a [T]` implements `ToInputValue<S>`
-            `&'a str` implements `ToInputValue<S>`
+            `&T` implements `ToInputValue<S>`
+            `&[T]` implements `ToInputValue<S>`
+            `&str` implements `ToInputValue<S>`
             `Arc<T>` implements `ToInputValue<S>`
             `Box<T>` implements `ToInputValue<S>`
             `ID` implements `ToInputValue<__S>`
diff --git a/tests/integration/tests/codegen_union_attr.rs b/tests/integration/tests/codegen_union_attr.rs
index a10a2435..b8e07208 100644
--- a/tests/integration/tests/codegen_union_attr.rs
+++ b/tests/integration/tests/codegen_union_attr.rs
@@ -1097,7 +1097,7 @@ mod external_resolver {
 
     type DynCharacter<'a> = dyn Character + prelude::Send + prelude::Sync + 'a;
 
-    impl<'a> DynCharacter<'a> {
+    impl DynCharacter<'_> {
         fn as_droid<'db>(&self, db: &'db Database) -> prelude::Option<&'db Droid> {
             db.droid.as_ref()
         }
diff --git a/tests/integration/tests/common/mod.rs b/tests/integration/tests/common/mod.rs
index aae6a04c..f21a89d7 100644
--- a/tests/integration/tests/common/mod.rs
+++ b/tests/integration/tests/common/mod.rs
@@ -94,7 +94,7 @@ impl<'de> Deserialize<'de> for MyScalarValue {
     fn deserialize<D: Deserializer<'de>>(de: D) -> Result<Self, D::Error> {
         struct Visitor;
 
-        impl<'de> de::Visitor<'de> for Visitor {
+        impl de::Visitor<'_> for Visitor {
             type Value = MyScalarValue;
 
             fn expecting(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {