diff --git a/compiler/forget/src/__tests__/fixtures/hir/_bug.capturing-reference-changes-type.expect.md b/compiler/forget/src/__tests__/fixtures/hir/_bug.capturing-reference-changes-type.expect.md
new file mode 100644
index 0000000000..40ca099123
--- /dev/null
+++ b/compiler/forget/src/__tests__/fixtures/hir/_bug.capturing-reference-changes-type.expect.md
@@ -0,0 +1,31 @@
+
+## Input
+
+```javascript
+function component(a) {
+  let x = { a };
+  let y = 1;
+  (function () {
+    y = x;
+  })();
+  mutate(y);
+  return y;
+}
+
+```
+
+## Code
+
+```javascript
+function component(a) {
+  const x = { a: a };
+
+  (function () {
+    y = x;
+  })();
+  mutate(1);
+  return 1;
+}
+
+```
+      
\ No newline at end of file
diff --git a/compiler/forget/src/__tests__/fixtures/hir/_bug.capturing-reference-changes-type.js b/compiler/forget/src/__tests__/fixtures/hir/_bug.capturing-reference-changes-type.js
new file mode 100644
index 0000000000..7c56dde4be
--- /dev/null
+++ b/compiler/forget/src/__tests__/fixtures/hir/_bug.capturing-reference-changes-type.js
@@ -0,0 +1,9 @@
+function component(a) {
+  let x = { a };
+  let y = 1;
+  (function () {
+    y = x;
+  })();
+  mutate(y);
+  return y;
+}