diff --git a/src/api/client/admin/lock.rs b/src/api/client/admin/lock.rs
new file mode 100644
index 000000000..eeee5bcb8
--- /dev/null
+++ b/src/api/client/admin/lock.rs
@@ -0,0 +1,89 @@
+use axum::extract::State;
+use conduwuit::Err;
+use futures::future::{join, join3};
+use ruma::api::client::admin::{is_user_locked, lock_user};
+
+use crate::router::Ruma;
+
+/// # `GET /_matrix/client/v1/admin/lock/{userId}`
+///
+/// Check the account lock status of a target user
+pub(crate) async fn get_locked_status(
+	State(services): State<crate::State>,
+	body: Ruma<is_user_locked::v1::Request>,
+) -> conduwuit::Result<is_user_locked::v1::Response> {
+	let sender_user = body.sender_user();
+
+	let (admin, active) =
+		join(services.users.is_admin(sender_user), services.users.is_active(&body.user_id)).await;
+	if !admin {
+		return Err!(Request(Forbidden("Only server administrators can use this endpoint")));
+	}
+	if !services.globals.user_is_local(&body.user_id) {
+		return Err!(Request(InvalidParam("Can only check the lock status of local users")));
+	}
+	if !active {
+		return Err!(Request(NotFound("Unknown user")));
+	}
+	Ok(is_user_locked::v1::Response::new(
+		services.users.is_locked(&body.user_id).await?,
+	))
+}
+
+/// # `PUT /_matrix/client/v1/admin/lock/{userId}`
+///
+/// Set the account lock status of a target user
+pub(crate) async fn put_locked_status(
+	State(services): State<crate::State>,
+	body: Ruma<lock_user::v1::Request>,
+) -> conduwuit::Result<lock_user::v1::Response> {
+	let sender_user = body.sender_user();
+
+	let (sender_admin, active, target_admin) = join3(
+		services.users.is_admin(sender_user),
+		services.users.is_active(&body.user_id),
+		services.users.is_admin(&body.user_id),
+	)
+	.await;
+
+	if !sender_admin {
+		return Err!(Request(Forbidden("Only server administrators can use this endpoint")));
+	}
+	if !services.globals.user_is_local(&body.user_id) {
+		return Err!(Request(InvalidParam("Can only set the locked status of local users")));
+	}
+	if !active {
+		return Err!(Request(NotFound("Unknown user")));
+	}
+	if body.user_id == *sender_user {
+		return Err!(Request(Forbidden("You cannot lock yourself")));
+	}
+	if target_admin {
+		return Err!(Request(Forbidden("You cannot lock another server administrator")));
+	}
+	if services.users.is_locked(&body.user_id).await? == body.locked {
+		// No change
+		return Ok(lock_user::v1::Response::new(body.locked));
+	}
+
+	let action = if body.locked {
+		services
+			.users
+			.lock_account(&body.user_id, sender_user)
+			.await;
+		"suspended"
+	} else {
+		services.users.unlock_account(&body.user_id).await;
+		"unsuspended"
+	};
+
+	if services.config.admin_room_notices {
+		// Notify the admin room that an account has been un/suspended
+		services
+			.admin
+			.send_text(&format!("{} has been {} by {}.", body.user_id, action, sender_user))
+			.await;
+	}
+
+	Ok(lock_user::v1::Response::new(body.locked))
+}
diff --git a/src/api/client/admin/mod.rs b/src/api/client/admin/mod.rs
index 8355a600c..88f434385 100644
--- a/src/api/client/admin/mod.rs
+++ b/src/api/client/admin/mod.rs
@@ -1,3 +1,4 @@
+mod lock;
 mod suspend;
 
-pub(crate) use self::suspend::*;
+pub(crate) use self::{lock::*, suspend::*};
diff --git a/src/api/client/admin/suspend.rs b/src/api/client/admin/suspend.rs
index b78c0beec..181a1f313 100644
--- a/src/api/client/admin/suspend.rs
+++ b/src/api/client/admin/suspend.rs
@@ -1,7 +1,7 @@
 use axum::extract::State;
 use conduwuit::{Err, Result};
 use futures::future::{join, join3};
-use ruminuwuity::admin::{get_suspended, set_suspended};
+use ruma::api::client::admin::{is_user_suspended, suspend_user};
 
 use crate::Ruma;
 
@@ -10,8 +10,8 @@ use crate::Ruma;
 /// Check the suspension status of a target user
 pub(crate) async fn get_suspended_status(
 	State(services): State<crate::State>,
-	body: Ruma<get_suspended::v1::Request>,
-) -> Result<get_suspended::v1::Response> {
+	body: Ruma<is_user_suspended::v1::Request>,
+) -> Result<is_user_suspended::v1::Response> {
 	let (admin, active) = join(
 		services.users.is_admin(body.identity.sender_user()),
 		services.users.is_active(&body.user_id),
@@ -26,7 +26,7 @@ pub(crate) async fn get_suspended_status(
 	if !active {
 		return Err!(Request(NotFound("Unknown user")));
 	}
-	Ok(get_suspended::v1::Response::new(
+	Ok(is_user_suspended::v1::Response::new(
 		services.users.is_suspended(&body.user_id).await?,
 	))
 }
@@ -36,8 +36,8 @@ pub(crate) async fn get_suspended_status(
 /// Set the suspension status of a target user
 pub(crate) async fn put_suspended_status(
 	State(services): State<crate::State>,
-	body: Ruma<set_suspended::v1::Request>,
-) -> Result<set_suspended::v1::Response> {
+	body: Ruma<suspend_user::v1::Request>,
+) -> Result<suspend_user::v1::Response> {
 	let sender_user = body.identity.sender_user();
 
 	let (sender_admin, active, target_admin) = join3(
@@ -64,7 +64,7 @@ pub(crate) async fn put_suspended_status(
 	}
 	if services.users.is_suspended(&body.user_id).await? == body.suspended {
 		// No change
-		return Ok(set_suspended::v1::Response::new(body.suspended));
+		return Ok(suspend_user::v1::Response::new(body.suspended));
 	}
 
 	let action = if body.suspended {
@@ -86,5 +86,5 @@ pub(crate) async fn put_suspended_status(
 			.await;
 	}
 
-	Ok(set_suspended::v1::Response::new(body.suspended))
+	Ok(suspend_user::v1::Response::new(body.suspended))
 }
diff --git a/src/api/router.rs b/src/api/router.rs
index eacc85359..5634fce5c 100644
--- a/src/api/router.rs
+++ b/src/api/router.rs
@@ -181,6 +181,8 @@ pub fn build(router: Router<State>, state: State) -> Router<State> {
 		.ruma_route(&client::get_room_summary)
 		.ruma_route(&client::get_suspended_status)
 		.ruma_route(&client::put_suspended_status)
+		.ruma_route(&client::get_locked_status)
+		.ruma_route(&client::put_locked_status)
 		.ruma_route(&client::well_known_support)
 		.ruma_route(&client::well_known_client)
 		.ruma_route(&client::well_known_policy_server)