diff --git a/Cargo.toml b/Cargo.toml
index 1de818ac..02c1cfe2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,6 +21,7 @@ as_conversions = "warn"
 assertions_on_result_states = "warn"
 cloned_instead_of_copied = "warn"
 dbg_macro = "warn"
+default_trait_access = "warn"
 default_union_representation = "warn"
 deref_by_slicing = "warn"
 empty_drop = "warn"
diff --git a/src/api/client_server/account.rs b/src/api/client_server/account.rs
index 2368ae92..784a00bb 100644
--- a/src/api/client_server/account.rs
+++ b/src/api/client_server/account.rs
@@ -151,7 +151,7 @@ pub(crate) async fn register_route(
                 stages: vec![AuthType::RegistrationToken],
             }],
             completed: Vec::new(),
-            params: Default::default(),
+            params: Box::default(),
             session: None,
             auth_error: None,
         };
@@ -163,7 +163,7 @@ pub(crate) async fn register_route(
                 stages: vec![AuthType::Dummy],
             }],
             completed: Vec::new(),
-            params: Default::default(),
+            params: Box::default(),
             session: None,
             auth_error: None,
         };
@@ -320,7 +320,7 @@ pub(crate) async fn change_password_route(
             stages: vec![AuthType::Password],
         }],
         completed: Vec::new(),
-        params: Default::default(),
+        params: Box::default(),
         session: None,
         auth_error: None,
     };
@@ -407,7 +407,7 @@ pub(crate) async fn deactivate_route(
             stages: vec![AuthType::Password],
         }],
         completed: Vec::new(),
-        params: Default::default(),
+        params: Box::default(),
         session: None,
         auth_error: None,
     };
diff --git a/src/api/client_server/device.rs b/src/api/client_server/device.rs
index 03f55d77..d63dd636 100644
--- a/src/api/client_server/device.rs
+++ b/src/api/client_server/device.rs
@@ -83,7 +83,7 @@ pub(crate) async fn delete_device_route(
             stages: vec![AuthType::Password],
         }],
         completed: Vec::new(),
-        params: Default::default(),
+        params: Box::default(),
         session: None,
         auth_error: None,
     };
@@ -137,7 +137,7 @@ pub(crate) async fn delete_devices_route(
             stages: vec![AuthType::Password],
         }],
         completed: Vec::new(),
-        params: Default::default(),
+        params: Box::default(),
         session: None,
         auth_error: None,
     };
diff --git a/src/api/client_server/keys.rs b/src/api/client_server/keys.rs
index 3ea66d7d..97ba84ff 100644
--- a/src/api/client_server/keys.rs
+++ b/src/api/client_server/keys.rs
@@ -108,7 +108,7 @@ pub(crate) async fn upload_signing_keys_route(
             stages: vec![AuthType::Password],
         }],
         completed: Vec::new(),
-        params: Default::default(),
+        params: Box::default(),
         session: None,
         auth_error: None,
     };
diff --git a/src/api/client_server/session.rs b/src/api/client_server/session.rs
index f0cf9b6b..9d1cc552 100644
--- a/src/api/client_server/session.rs
+++ b/src/api/client_server/session.rs
@@ -3,7 +3,13 @@ use crate::{services, utils, Error, Result, Ruma};
 use ruma::{
     api::client::{
         error::ErrorKind,
-        session::{get_login_types, login, logout, logout_all},
+        session::{
+            get_login_types::{
+                self,
+                v3::{ApplicationServiceLoginType, PasswordLoginType},
+            },
+            login, logout, logout_all,
+        },
         uiaa::UserIdentifier,
     },
     UserId,
@@ -25,8 +31,8 @@ pub(crate) async fn get_login_types_route(
     _body: Ruma<get_login_types::v3::Request>,
 ) -> Result<get_login_types::v3::Response> {
     Ok(get_login_types::v3::Response::new(vec![
-        get_login_types::v3::LoginType::Password(Default::default()),
-        get_login_types::v3::LoginType::ApplicationService(Default::default()),
+        get_login_types::v3::LoginType::Password(PasswordLoginType::default()),
+        get_login_types::v3::LoginType::ApplicationService(ApplicationServiceLoginType::default()),
     ]))
 }
 
diff --git a/src/service/rooms/threads.rs b/src/service/rooms/threads.rs
index d7690c08..99f28c8d 100644
--- a/src/service/rooms/threads.rs
+++ b/src/service/rooms/threads.rs
@@ -4,7 +4,7 @@ pub(crate) use data::Data;
 use ruma::{
     api::client::{error::ErrorKind, threads::get_threads::v1::IncludeThreads},
     events::relation::BundledThread,
-    uint, CanonicalJsonValue, EventId, RoomId, UserId,
+    uint, CanonicalJsonObject, CanonicalJsonValue, EventId, RoomId, UserId,
 };
 
 use serde_json::json;
@@ -56,7 +56,7 @@ impl Service {
 
         if let CanonicalJsonValue::Object(unsigned) = root_pdu_json
             .entry("unsigned".to_owned())
-            .or_insert_with(|| CanonicalJsonValue::Object(Default::default()))
+            .or_insert_with(|| CanonicalJsonValue::Object(CanonicalJsonObject::default()))
         {
             if let Some(mut relations) = unsigned
                 .get("m.relations")
diff --git a/src/service/rooms/timeline.rs b/src/service/rooms/timeline.rs
index bafcec29..a8577f5a 100644
--- a/src/service/rooms/timeline.rs
+++ b/src/service/rooms/timeline.rs
@@ -214,7 +214,7 @@ impl Service {
         if let Some(state_key) = &pdu.state_key {
             if let CanonicalJsonValue::Object(unsigned) = pdu_json
                 .entry("unsigned".to_owned())
-                .or_insert_with(|| CanonicalJsonValue::Object(Default::default()))
+                .or_insert_with(|| CanonicalJsonValue::Object(CanonicalJsonObject::default()))
             {
                 if let Some(shortstatehash) = services()
                     .rooms