diff --git a/actix-rt/CHANGES.md b/actix-rt/CHANGES.md
index c38373dd..73bcac5c 100644
--- a/actix-rt/CHANGES.md
+++ b/actix-rt/CHANGES.md
@@ -8,8 +8,10 @@
 * Rename `Arbiter::{send => spawn}` and `Arbiter::{exec_fn => spawn_fn}`. [#253]
 * Remove `Arbiter::exec`. [#253]
 * Remove deprecated `Arbiter::local_join` and `Arbiter::is_running`. [#253]
+* Rename `Arbiter => Worker`. [#254]
 
 [#253]: https://github.com/actix/actix-net/pull/253
+[#254]: https://github.com/actix/actix-net/pull/254
 
 
 ## 2.0.0-beta.2 - 2021-01-09
diff --git a/actix-rt/Cargo.toml b/actix-rt/Cargo.toml
index 273917eb..f5a6ba6a 100644
--- a/actix-rt/Cargo.toml
+++ b/actix-rt/Cargo.toml
@@ -22,7 +22,6 @@ macros = ["actix-macros"]
 [dependencies]
 actix-macros = { version = "0.2.0-beta.1", optional = true }
 
-ahash = "0.7"
 futures-core = { version = "0.3", default-features = false }
 tokio = { version = "1", features = ["rt", "net", "parking_lot", "signal", "sync", "time"] }
 
diff --git a/actix-rt/src/builder.rs b/actix-rt/src/builder.rs
index b8acf71b..01c85512 100644
--- a/actix-rt/src/builder.rs
+++ b/actix-rt/src/builder.rs
@@ -6,9 +6,9 @@ use tokio::sync::{
 };
 
 use crate::{
-    worker::Worker,
     runtime::Runtime,
     system::{System, SystemWorker},
+    worker::Worker,
 };
 
 /// Builder an actix runtime.
diff --git a/actix-rt/src/worker.rs b/actix-rt/src/worker.rs
index 44c14cb7..6b022eb2 100644
--- a/actix-rt/src/worker.rs
+++ b/actix-rt/src/worker.rs
@@ -1,6 +1,7 @@
 use std::{
     any::{Any, TypeId},
     cell::RefCell,
+    collections::HashMap,
     fmt,
     future::Future,
     pin::Pin,
@@ -9,12 +10,8 @@ use std::{
     thread,
 };
 
-use ahash::AHashMap;
 use futures_core::ready;
-use tokio::{
-    sync::mpsc::{unbounded_channel, UnboundedReceiver, UnboundedSender},
-    task::LocalSet,
-};
+use tokio::{sync::mpsc, task::LocalSet};
 
 use crate::{
     runtime::Runtime,
@@ -25,7 +22,7 @@ pub(crate) static COUNT: AtomicUsize = AtomicUsize::new(0);
 
 thread_local!(
     static ADDR: RefCell<Option<Worker>> = RefCell::new(None);
-    static STORAGE: RefCell<AHashMap<TypeId, Box<dyn Any>>> = RefCell::new(AHashMap::new());
+    static STORAGE: RefCell<HashMap<TypeId, Box<dyn Any>>> = RefCell::new(HashMap::new());
 );
 
 pub(crate) enum WorkerCommand {
@@ -51,13 +48,13 @@ impl fmt::Debug for WorkerCommand {
 /// Some Arbiter functions execute on the current thread.
 #[derive(Debug)]
 pub struct Worker {
-    sender: UnboundedSender<WorkerCommand>,
+    sender: mpsc::UnboundedSender<WorkerCommand>,
     thread_handle: Option<thread::JoinHandle<()>>,
 }
 
 impl Clone for Worker {
     fn clone(&self) -> Self {
-        Self::new_with_sender(self.sender.clone())
+        Self::new_handle(self.sender.clone())
     }
 }
 
@@ -69,9 +66,9 @@ impl Default for Worker {
 
 impl Worker {
     pub(crate) fn new_system(local: &LocalSet) -> Self {
-        let (tx, rx) = unbounded_channel();
+        let (tx, rx) = mpsc::unbounded_channel();
 
-        let arb = Worker::new_with_sender(tx);
+        let arb = Worker::new_handle(tx);
         ADDR.with(|cell| *cell.borrow_mut() = Some(arb.clone()));
         STORAGE.with(|cell| cell.borrow_mut().clear());
 
@@ -80,7 +77,7 @@ impl Worker {
         arb
     }
 
-    fn new_with_sender(sender: UnboundedSender<WorkerCommand>) -> Self {
+    fn new_handle(sender: mpsc::UnboundedSender<WorkerCommand>) -> Self {
         Self {
             sender,
             thread_handle: None,
@@ -110,7 +107,7 @@ impl Worker {
         let id = COUNT.fetch_add(1, Ordering::Relaxed);
         let name = format!("actix-rt:worker:{}", id);
         let sys = System::current();
-        let (tx, rx) = unbounded_channel();
+        let (tx, rx) = mpsc::unbounded_channel();
 
         let handle = thread::Builder::new()
             .name(name.clone())
@@ -118,7 +115,7 @@ impl Worker {
                 let tx = tx.clone();
                 move || {
                     let rt = Runtime::new().expect("Can not create Runtime");
-                    let arb = Worker::new_with_sender(tx);
+                    let arb = Worker::new_handle(tx);
 
                     STORAGE.with(|cell| cell.borrow_mut().clear());
 
@@ -179,8 +176,10 @@ impl Worker {
             .is_ok()
     }
 
-    /// Insert item to worker's thread-local storage.
-    pub fn insert_item<T: 'static>(item: T) {
+    /// Insert item into worker's thread-local storage.
+    ///
+    /// Overwrites any item of the same type previously inserted.
+    pub fn set_item<T: 'static>(item: T) {
         STORAGE.with(move |cell| cell.borrow_mut().insert(TypeId::of::<T>(), Box::new(item)));
     }
 
@@ -216,7 +215,7 @@ impl Worker {
     ///
     /// # Panics
     /// Panics if item is not in worker's thread-local item storage.
-    pub fn get_item_mut<T: 'static, F, R>(mut f: F) -> R
+    pub fn get_mut_item<T: 'static, F, R>(mut f: F) -> R
     where
         F: FnMut(&mut T) -> R,
     {
@@ -244,7 +243,7 @@ impl Worker {
 
 /// A persistent worker future that processes worker commands.
 struct WorkerRunner {
-    rx: UnboundedReceiver<WorkerCommand>,
+    rx: mpsc::UnboundedReceiver<WorkerCommand>,
 }
 
 impl Drop for WorkerRunner {