diff --git a/actix-rt/CHANGES.md b/actix-rt/CHANGES.md
index 379afbd7..a22d3794 100644
--- a/actix-rt/CHANGES.md
+++ b/actix-rt/CHANGES.md
@@ -11,10 +11,20 @@
 * Remove `System::arbiter`. [#256]
 * Remove deprecated `Worker::local_join` and `Worker::is_running`. [#253]
 * `Worker::spawn` now accepts !Unpin futures. [#256]
+* `System::new` no longer takes arguments. [#257]
+* Remove `System::with_current`. [#257]
+* Remove `Builder`. [#257]
+* Add `System::with_init` as replacement for `Builder::run`. [#257]
+* Rename `System::{is_set => is_registered}`. [#257]
+* Add `WorkerHandle` for sending messages to non-current-thread workers. [#257].
+* `System::worker` now returns a `&WorkerHandle`. [#257]
+* Rename `Worker::{current => handle}` and return a `WorkerHandle` instead. [#257]
+* `Worker::join` now takes self by value. [#257]
 
 [#253]: https://github.com/actix/actix-net/pull/253
 [#254]: https://github.com/actix/actix-net/pull/254
 [#256]: https://github.com/actix/actix-net/pull/256
+[#257]: https://github.com/actix/actix-net/pull/257
 
 
 ## 2.0.0-beta.2 - 2021-01-09
diff --git a/actix-server/tests/test_server.rs b/actix-server/tests/test_server.rs
index 8d93ba0b..86ec25e6 100644
--- a/actix-server/tests/test_server.rs
+++ b/actix-server/tests/test_server.rs
@@ -21,7 +21,7 @@ fn test_bind() {
     let (tx, rx) = mpsc::channel();
 
     let h = thread::spawn(move || {
-        let sys = actix_rt::System::new("test");
+        let sys = actix_rt::System::new();
         let srv = sys.block_on(lazy(|_| {
             Server::build()
                 .workers(1)
@@ -47,7 +47,7 @@ fn test_listen() {
     let (tx, rx) = mpsc::channel();
 
     let h = thread::spawn(move || {
-        let sys = actix_rt::System::new("test");
+        let sys = actix_rt::System::new();
         let lst = net::TcpListener::bind(addr).unwrap();
         sys.block_on(async {
             Server::build()
@@ -81,7 +81,7 @@ fn test_start() {
     let (tx, rx) = mpsc::channel();
 
     let h = thread::spawn(move || {
-        let sys = actix_rt::System::new("test");
+        let sys = actix_rt::System::new();
         let srv = sys.block_on(lazy(|_| {
             Server::build()
                 .backlog(100)
@@ -150,7 +150,7 @@ fn test_configure() {
 
     let h = thread::spawn(move || {
         let num = num2.clone();
-        let sys = actix_rt::System::new("test");
+        let sys = actix_rt::System::new();
         let srv = sys.block_on(lazy(|_| {
             Server::build()
                 .disable_signals()