diff --git a/lib/rouge/lexers/swift.rb b/lib/rouge/lexers/swift.rb
index 45c04c56f9..f4ad79f7b5 100644
--- a/lib/rouge/lexers/swift.rb
+++ b/lib/rouge/lexers/swift.rb
@@ -15,17 +15,17 @@ class Swift < RegexLexer
       id = /#{id_head}#{id_rest}*/
 
       keywords = Set.new %w(
-        break case continue default do else fallthrough if in for return switch where while try catch throw guard defer repeat
+        await break case continue default do else fallthrough if in for return switch where while try catch throw guard defer repeat
 
         as dynamicType is new super self Self Type __COLUMN__ __FILE__ __FUNCTION__ __LINE__
 
-        associativity didSet get infix inout mutating none nonmutating operator override postfix precedence prefix set unowned weak willSet throws rethrows precedencegroup
+        associativity async didSet get infix inout isolated mutating none nonmutating operator override postfix precedence prefix set unowned weak willSet throws rethrows precedencegroup
 
         #available #colorLiteral #column #else #elseif #endif #error #file #fileLiteral #function #if #imageLiteral #line #selector #sourceLocation #warning
       )
 
       declarations = Set.new %w(
-        class deinit enum convenience extension final func import init internal lazy let optional private protocol public required static struct subscript typealias var dynamic indirect associatedtype open fileprivate some
+        actor class deinit enum convenience extension final func import init internal lazy let nonisolated optional private protocol public required static struct subscript typealias var dynamic indirect associatedtype open fileprivate some
       )
 
       constants = Set.new %w(
diff --git a/spec/visual/samples/swift b/spec/visual/samples/swift
index bb12c0db72..aaa507b0ab 100644
--- a/spec/visual/samples/swift
+++ b/spec/visual/samples/swift
@@ -452,4 +452,12 @@ func test(t: Types?) -> Bool {
 	}
 }
 
+actor AnActor {
+  nonisolated func funcA() {}
+  func funcB(otherActor: isolated AnActor) async {
+    await otherActor.funcB()
+    async let v = funcA()
+  }
+}
+
 foo() // end-of-file comment