diff --git a/Changes.md b/Changes.md
index 0f8263ddf..904dc0c6e 100644
--- a/Changes.md
+++ b/Changes.md
@@ -7,6 +7,8 @@ Unreleased
   ([#1137](https://github.com/melange-re/melange/pull/1137))
 - support `[@mel.*]` attributes in uncurried externals
   ([#1140](https://github.com/melange-re/melange/pull/1140))
+- add Worker types to `melange.dom`
+  ([#1147](https://github.com/melange-re/melange/pull/1147))
 
 4.0.1 2024-06-07
 ---------------
diff --git a/jscomp/others/dom.ml b/jscomp/others/dom.ml
index 229359652..ab1f6b0b6 100644
--- a/jscomp/others/dom.ml
+++ b/jscomp/others/dom.ml
@@ -21,13 +21,21 @@ type serviceWorker = _serviceWorker eventTarget_like
 type _worker
 type worker = _worker eventTarget_like
 type 'a _workerGlobalScope
-type workerGlobalScope = _baseClass 'a _workerGlobalScope eventTarget_like
+type workerGlobalScope = _baseClass _workerGlobalScope eventTarget_like
 type _dedicatedWorkerGlobalScope
-type dedicatedWorkerGlobalScope = _dedicatedWorkerGlobalScope 'a _workerGlobalScope eventTarget_like
+
+type dedicatedWorkerGlobalScope =
+  _dedicatedWorkerGlobalScope _workerGlobalScope eventTarget_like
+
 type _serviceWorkerGlobalScope
-type serviceWorkerGlobalScope = _serviceWorkerGlobalScope 'a _workerGlobalScope eventTarget_like
+
+type serviceWorkerGlobalScope =
+  _serviceWorkerGlobalScope _workerGlobalScope eventTarget_like
+
 type _sharedWorkerGlobalScope
-type sharedWorkerGlobalScope = _sharedWorkerGlobalScope 'a _workerGlobalScope eventTarget_like
+
+type sharedWorkerGlobalScope =
+  _sharedWorkerGlobalScope _workerGlobalScope eventTarget_like
 
 (* nodes *)
 type 'a _node