diff --git a/swift/extractor/mangler/SwiftMangler.cpp b/swift/extractor/mangler/SwiftMangler.cpp
index 3743ab53dcad..04e04fd6fbc7 100644
--- a/swift/extractor/mangler/SwiftMangler.cpp
+++ b/swift/extractor/mangler/SwiftMangler.cpp
@@ -243,6 +243,9 @@ SwiftMangledName SwiftMangler::visitAnyFunctionType(const swift::AnyFunctionType
   if (type->hasGlobalActor()) {
     ret << "_actor" << fetch(type->getGlobalActor());
   }
+  if (type->getIsolation().isErased()) {
+    ret << "_isolated";
+  }
   // TODO: see if this needs to be used in identifying types, if not it needs to be removed from
   // type printing in the Swift compiler code
   assert(type->hasExtInfo() && "type must have ext info");
diff --git a/swift/third_party/load.bzl b/swift/third_party/load.bzl
index 312e7e84221b..dd8470a023f8 100644
--- a/swift/third_party/load.bzl
+++ b/swift/third_party/load.bzl
@@ -5,7 +5,7 @@ load("//misc/bazel:lfs.bzl", "lfs_archive", "lfs_files")
 
 _override = {
     # these are used to test new artifacts. Must be empty before merging to main
-    "swift-prebuilt-macOS.tar.zst": "a016ed60ee1a534439ed4d55100ecf6b9fc739f629be20942345ac5156cb6296",
+    "swift-prebuilt-macOS.tar.zst": "4679ad4086ac6894e2f8a6bd71c5033941c894844809bf988dacb8af0c384416",
     "swift-prebuilt-Linux.tar.zst": "c45976d50670964132cef1dcf98bccd3fff809d33b2207a85cf3cfd07ec84528",
     "resource-dir-macOS.zip": "286e4403aa0a56641c2789e82036481535e336484f2c760bec0f42e3afe5dd87",
     "resource-dir-Linux.zip": "16a1760f152395377a580a994885e0877338279125834463a6a38f4006ad61ca",