diff --git a/content/client-server-api/modules/reference_relations.md b/content/client-server-api/modules/reference_relations.md
index 7dec9d3c..f623c67d 100644
--- a/content/client-server-api/modules/reference_relations.md
+++ b/content/client-server-api/modules/reference_relations.md
@@ -1,7 +1,7 @@
 
 ### Reference relations
 
-{{% added-in v="1.4" %}}
+{{% added-in v="1.5" %}}
 
 Generically referencing another event can be done with a `rel_type` of `m.reference`
 as a form of [relationship](#forming-relationships-between-events). There is no