diff --git a/serde_derive/src/dummy.rs b/serde_derive/src/dummy.rs
index 1c982824..d55baf29 100644
--- a/serde_derive/src/dummy.rs
+++ b/serde_derive/src/dummy.rs
@@ -21,9 +21,7 @@ pub fn wrap_in_const(
             use #path as _serde;
         },
         None => quote! {
-            #[allow(unknown_lints)]
-            #[cfg_attr(feature = "cargo-clippy", allow(useless_attribute))]
-            #[allow(rust_2018_idioms)]
+            #[allow(rust_2018_idioms, clippy::useless_attribute)]
             extern crate serde as _serde;
         },
     };
diff --git a/serde_derive/src/lib.rs b/serde_derive/src/lib.rs
index dd222bf0..dcc757d5 100644
--- a/serde_derive/src/lib.rs
+++ b/serde_derive/src/lib.rs
@@ -15,44 +15,37 @@
 
 #![doc(html_root_url = "https://docs.rs/serde_derive/1.0.106")]
 #![allow(unknown_lints, bare_trait_objects)]
-#![cfg_attr(feature = "cargo-clippy", allow(renamed_and_removed_lints))]
-#![cfg_attr(feature = "cargo-clippy", deny(clippy, clippy_pedantic))]
+#![deny(clippy::all, clippy::pedantic)]
 // Ignored clippy lints
-#![cfg_attr(
-    feature = "cargo-clippy",
-    allow(
-        cognitive_complexity,
-        enum_variant_names,
-        needless_pass_by_value,
-        redundant_field_names,
-        too_many_arguments,
-        trivially_copy_pass_by_ref,
-        used_underscore_binding,
-        wildcard_in_or_patterns,
-    )
+#![allow(
+    clippy::cognitive_complexity,
+    clippy::enum_variant_names,
+    clippy::needless_pass_by_value,
+    clippy::redundant_field_names,
+    clippy::too_many_arguments,
+    clippy::trivially_copy_pass_by_ref,
+    clippy::used_underscore_binding,
+    clippy::wildcard_in_or_patterns
 )]
 // Ignored clippy_pedantic lints
-#![cfg_attr(
-    feature = "cargo-clippy",
-    allow(
-        cast_possible_truncation,
-        checked_conversions,
-        doc_markdown,
-        enum_glob_use,
-        filter_map,
-        indexing_slicing,
-        items_after_statements,
-        match_same_arms,
-        module_name_repetitions,
-        must_use_candidate,
-        similar_names,
-        single_match_else,
-        struct_excessive_bools,
-        too_many_lines,
-        unseparated_literal_suffix,
-        use_self,
-        wildcard_imports,
-    )
+#![allow(
+    clippy::cast_possible_truncation,
+    clippy::checked_conversions,
+    clippy::doc_markdown,
+    clippy::enum_glob_use,
+    clippy::filter_map,
+    clippy::indexing_slicing,
+    clippy::items_after_statements,
+    clippy::match_same_arms,
+    clippy::module_name_repetitions,
+    clippy::must_use_candidate,
+    clippy::similar_names,
+    clippy::single_match_else,
+    clippy::struct_excessive_bools,
+    clippy::too_many_lines,
+    clippy::unseparated_literal_suffix,
+    clippy::use_self,
+    clippy::wildcard_imports
 )]
 // The `quote!` macro requires deep recursion.
 #![recursion_limit = "512"]