diff --git a/.cargo/config.toml b/.cargo/config.toml
index 1ff4f1554..39e4bff85 100644
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -8,8 +8,11 @@ crates-io = "https://docs.rs/"
 rustflags = [
     "-Wrust_2018_idioms",
     "-Wsemicolon_in_expressions_from_macros",
+    "-Wunused_extern_crates",
     "-Wunused_import_braces",
     "-Wunused_qualifications",
+    "-Wtrivial_casts",
+    "-Wtrivial_numeric_casts",
     "-Wclippy::cloned_instead_of_copied",
     "-Wclippy::dbg_macro",
     "-Wclippy::inefficient_to_string",
diff --git a/crates/matrix-crypto-ffi/src/lib.rs b/crates/matrix-crypto-ffi/src/lib.rs
index a2b2b4daa..565bf68cc 100644
--- a/crates/matrix-crypto-ffi/src/lib.rs
+++ b/crates/matrix-crypto-ffi/src/lib.rs
@@ -1,11 +1,4 @@
-#![deny(
-    dead_code,
-    missing_docs,
-    trivial_casts,
-    trivial_numeric_casts,
-    unused_extern_crates,
-    unused_import_braces
-)]
+#![deny(dead_code, missing_docs)]
 
 //! Uniffi based bindings for the `matrix-sdk-crypto` crate.
 //!
diff --git a/crates/matrix-qrcode/src/lib.rs b/crates/matrix-qrcode/src/lib.rs
index 184c3c5c9..50e1414b9 100644
--- a/crates/matrix-qrcode/src/lib.rs
+++ b/crates/matrix-qrcode/src/lib.rs
@@ -14,16 +14,7 @@
 
 #![doc = include_str!("../README.md")]
 #![cfg_attr(docsrs, feature(doc_auto_cfg))]
-#![deny(
-    missing_debug_implementations,
-    dead_code,
-    trivial_casts,
-    missing_docs,
-    trivial_numeric_casts,
-    unused_extern_crates,
-    unused_import_braces,
-    unused_qualifications
-)]
+#![deny(missing_debug_implementations, dead_code, missing_docs)]
 
 mod error;
 mod types;
diff --git a/crates/matrix-sdk-base/src/lib.rs b/crates/matrix-sdk-base/src/lib.rs
index b8d6147e7..69c84e6af 100644
--- a/crates/matrix-sdk-base/src/lib.rs
+++ b/crates/matrix-sdk-base/src/lib.rs
@@ -16,14 +16,7 @@
 #![doc = include_str!("../README.md")]
 #![cfg_attr(docsrs, feature(doc_auto_cfg))]
 #![warn(missing_docs)]
-#![deny(
-    missing_debug_implementations,
-    trivial_casts,
-    trivial_numeric_casts,
-    unused_extern_crates,
-    unused_import_braces,
-    unused_qualifications
-)]
+#![deny(missing_debug_implementations)]
 
 pub use matrix_sdk_common::*;
 
diff --git a/crates/matrix-sdk-common/src/lib.rs b/crates/matrix-sdk-common/src/lib.rs
index 1ecf2c6c2..90f37453a 100644
--- a/crates/matrix-sdk-common/src/lib.rs
+++ b/crates/matrix-sdk-common/src/lib.rs
@@ -1,12 +1,5 @@
 #![doc = include_str!("../README.md")]
-#![deny(
-    missing_debug_implementations,
-    trivial_casts,
-    trivial_numeric_casts,
-    unused_extern_crates,
-    unused_import_braces,
-    unused_qualifications
-)]
+#![deny(missing_debug_implementations)]
 
 pub use async_trait::async_trait;
 pub use instant;
diff --git a/crates/matrix-sdk-crypto/src/lib.rs b/crates/matrix-sdk-crypto/src/lib.rs
index 8c314b27f..5616cb807 100644
--- a/crates/matrix-sdk-crypto/src/lib.rs
+++ b/crates/matrix-sdk-crypto/src/lib.rs
@@ -15,15 +15,7 @@
 #![doc = include_str!("../README.md")]
 #![cfg_attr(docsrs, feature(doc_auto_cfg))]
 #![warn(missing_docs)]
-#![deny(
-    missing_debug_implementations,
-    dead_code,
-    trivial_casts,
-    trivial_numeric_casts,
-    unused_extern_crates,
-    unused_import_braces,
-    unused_qualifications
-)]
+#![deny(missing_debug_implementations, dead_code)]
 
 #[cfg(all(feature = "indexeddb_cryptostore", not(target_arch = "wasm32")))]
 compile_error!("indexeddb_cryptostore only works for wasm32 target");
diff --git a/crates/matrix-sdk/src/lib.rs b/crates/matrix-sdk/src/lib.rs
index fb3f3a0c1..414dc5179 100644
--- a/crates/matrix-sdk/src/lib.rs
+++ b/crates/matrix-sdk/src/lib.rs
@@ -14,17 +14,7 @@
 // limitations under the License.
 
 #![doc = include_str!("../README.md")]
-#![deny(
-    missing_debug_implementations,
-    missing_docs,
-    dead_code,
-    missing_docs,
-    trivial_casts,
-    trivial_numeric_casts,
-    unused_extern_crates,
-    unused_import_braces,
-    unused_qualifications
-)]
+#![deny(missing_debug_implementations, missing_docs, dead_code)]
 #![cfg_attr(docsrs, feature(doc_auto_cfg))]
 
 #[cfg(not(any(feature = "native-tls", feature = "rustls-tls",)))]