diff --git a/specs/json-schema-ref-parser/test-siblings.yaml b/specs/json-schema-ref-parser/test-siblings.yaml
new file mode 100644
index 000000000..90bac2612
--- /dev/null
+++ b/specs/json-schema-ref-parser/test-siblings.yaml
@@ -0,0 +1,14 @@
+components:
+  schemas:
+    MainSchema:
+      type: object
+      properties:
+        typeField:
+          $ref: '#/components/schemas/SiblingSchema'
+        name:
+          type: string
+    SiblingSchema:
+      type: string
+      enum:
+        - TypeA
+        - TypeB