diff --git a/std/sys/fs/File.hx b/std/sys/fs/File.hx
index 44aa62eeee1..717c9b1288f 100644
--- a/std/sys/fs/File.hx
+++ b/std/sys/fs/File.hx
@@ -28,7 +28,6 @@ extern class File {
 	function syncAll():Void;
 	function syncData():Void;
 	function metadata():Metadata;
-	function setPermissions(perm:Permissions):Void;
 	// TODO: technically these should all use a Int64 or even uint64 type, but `haxe.io.Bytes` uses an int length, so...
 
 	function read(bytes:haxe.io.Bytes, bufferOffset:Int, bufferLength:Int):Int;
diff --git a/std/sys/fs/Fs.hx b/std/sys/fs/Fs.hx
index 8ec21f23f6c..fb00eab6a51 100644
--- a/std/sys/fs/Fs.hx
+++ b/std/sys/fs/Fs.hx
@@ -9,7 +9,6 @@ extern class Fs {
 		Returns the metadata for `path` without following symlinks.
 	**/
 	static function symlinkMetadata(path:Path):Metadata;
-	static function setPermissions(path:Path, perm:Permissions):Void;
 	static function copy(from:Path, to:Path):Void;
 	static function rename(from:Path, to:Path):Void;
 	static function readDir(path:Path):Iterator<DirEntry>;
diff --git a/std/sys/fs/Metadata.hx b/std/sys/fs/Metadata.hx
index 23b10e93a37..d99689121ca 100644
--- a/std/sys/fs/Metadata.hx
+++ b/std/sys/fs/Metadata.hx
@@ -6,7 +6,6 @@ extern class Metadata {
 	function isFile():Bool;
 	function isSymlink():Bool;
 	function size():haxe.Int64;
-	function permissions():Permissions;
 	function modified():Null<haxe.time.SystemTime>;
 	function accessed():Null<haxe.time.SystemTime>;
 	function created():Null<haxe.time.SystemTime>;
diff --git a/std/sys/fs/Permissions.hx b/std/sys/fs/Permissions.hx
deleted file mode 100644
index 65b729f78d5..00000000000
--- a/std/sys/fs/Permissions.hx
+++ /dev/null
@@ -1,9 +0,0 @@
-package sys.fs;
-
-@:coreApi
-extern class Permissions {
-	/**
-		Note that this does not affect the file, use `Fs.setPermissions`.
-	**/
-	var readonly(get, set):Bool;
-}
\ No newline at end of file
diff --git a/std/sys/net/TcpStream.hx b/std/sys/net/TcpStream.hx
index 2a38b09ab70..19c4c106244 100644
--- a/std/sys/net/TcpStream.hx
+++ b/std/sys/net/TcpStream.hx
@@ -4,6 +4,12 @@ import haxe.time.Duration;
 
 // TODO: docs
 
+#if available(feature = "new_tcp_api")
+
+#end
+
+@:experimental(feature = "new_tcp_api")
+@:stable(feature = "new_tcp_api", since = "5.0.0")
 @:coreApi
 extern class TcpStream {
 	static function connect(address:SocketAddress, ?timeout:Duration):TcpStream;