diff --git a/Cargo.toml b/Cargo.toml
index c35dfcbd8c44..5bb9f527081e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -49,7 +49,7 @@ if_chain = "1.0"
 itertools = "0.10.1"
 quote = "1.0"
 serde = { version = "1.0.125", features = ["derive"] }
-syn = { version = "1.0", features = ["full"] }
+syn = { version = "2.0", features = ["full"] }
 futures = "0.3"
 parking_lot = "0.12"
 tokio = { version = "1", features = ["io-util"] }
diff --git a/declare_clippy_lint/Cargo.toml b/declare_clippy_lint/Cargo.toml
index 5c9f76dbbc60..bd26f4fc9139 100644
--- a/declare_clippy_lint/Cargo.toml
+++ b/declare_clippy_lint/Cargo.toml
@@ -10,7 +10,7 @@ proc-macro = true
 [dependencies]
 itertools = "0.10.1"
 quote = "1.0.21"
-syn = "1.0.100"
+syn = "2.0"
 
 [features]
 deny-warnings = []
diff --git a/declare_clippy_lint/src/lib.rs b/declare_clippy_lint/src/lib.rs
index 26210556d652..5232e4ab7d75 100644
--- a/declare_clippy_lint/src/lib.rs
+++ b/declare_clippy_lint/src/lib.rs
@@ -6,16 +6,16 @@
 use proc_macro::TokenStream;
 use quote::{format_ident, quote};
 use syn::parse::{Parse, ParseStream};
-use syn::{parse_macro_input, Attribute, Error, Ident, Lit, LitStr, Meta, Result, Token};
+use syn::{parse_macro_input, Attribute, Error, Expr, ExprLit, Ident, Lit, LitStr, Meta, Result, Token};
 
 fn parse_attr<const LEN: usize>(path: [&'static str; LEN], attr: &Attribute) -> Option<LitStr> {
-    if let Meta::NameValue(name_value) = attr.parse_meta().ok()? {
+    if let Meta::NameValue(name_value) = &attr.meta {
         let path_idents = name_value.path.segments.iter().map(|segment| &segment.ident);
 
         if itertools::equal(path_idents, path)
-            && let Lit::Str(lit) = name_value.lit
+            && let Expr::Lit(ExprLit { lit: Lit::Str(s), .. }) = &name_value.value
         {
-            return Some(lit);
+            return Some(s.clone());
         }
     }
 
diff --git a/tests/ui/auxiliary/proc_macro_attr.rs b/tests/ui/auxiliary/proc_macro_attr.rs
index 4914f14b58ff..b498fece5132 100644
--- a/tests/ui/auxiliary/proc_macro_attr.rs
+++ b/tests/ui/auxiliary/proc_macro_attr.rs
@@ -28,7 +28,7 @@ pub fn dummy(_args: TokenStream, input: TokenStream) -> TokenStream {
 pub fn fake_async_trait(_args: TokenStream, input: TokenStream) -> TokenStream {
     let mut item = parse_macro_input!(input as ItemTrait);
     for inner in &mut item.items {
-        if let TraitItem::Method(method) = inner {
+        if let TraitItem::Fn(method) = inner {
             let sig = &method.sig;
             let block = &mut method.default;
             if let Some(block) = block {
@@ -70,7 +70,7 @@ pub fn rename_my_lifetimes(_args: TokenStream, input: TokenStream) -> TokenStrea
 
     // Look for methods having arbitrary self type taken by &mut ref
     for inner in &mut item.items {
-        if let ImplItem::Method(method) = inner {
+        if let ImplItem::Fn(method) = inner {
             if let Some(FnArg::Typed(pat_type)) = mut_receiver_of(&mut method.sig) {
                 if let box Type::Reference(reference) = &mut pat_type.ty {
                     // Target only unnamed lifetimes
diff --git a/tests/ui/needless_arbitrary_self_type_unfixable.stderr b/tests/ui/needless_arbitrary_self_type_unfixable.stderr
index b2edbfe4323e..c7df5936d706 100644
--- a/tests/ui/needless_arbitrary_self_type_unfixable.stderr
+++ b/tests/ui/needless_arbitrary_self_type_unfixable.stderr
@@ -2,7 +2,7 @@ error: the type of the `self` parameter does not need to be arbitrary
   --> $DIR/needless_arbitrary_self_type_unfixable.rs:42:31
    |
 LL |         fn call_with_mut_self(self: &mut Self) {}
-   |                               ^^^^^^^^^^^^^^^ help: consider to change this parameter to: `&'_ mut self`
+   |                               ^^^^^^^^^^^^^^^ help: consider to change this parameter to: `&mut self`
    |
    = note: `-D clippy::needless-arbitrary-self-type` implied by `-D warnings`