diff --git a/.changeset/cyan-turkeys-matter.md b/.changeset/cyan-turkeys-matter.md
new file mode 100644
index 00000000..4766fd8b
--- /dev/null
+++ b/.changeset/cyan-turkeys-matter.md
@@ -0,0 +1,5 @@
+---
+"@effect/io": patch
+---
+
+fix missing fiber on AsyncFiberException
diff --git a/src/internal/runtime.ts b/src/internal/runtime.ts
index 88f322e9..b5074893 100644
--- a/src/internal/runtime.ts
+++ b/src/internal/runtime.ts
@@ -117,6 +117,9 @@ const asyncFiberException = <E, A>(fiber: Fiber.RuntimeFiber<E, A>): Runtime.Asy
     _tag: {
       value: _tag
     },
+    fiber: {
+      value: fiber
+    },
     message: {
       value: message
     },