diff --git a/priv/static/schemas/litepub-0.1.jsonld b/priv/static/schemas/litepub-0.1.jsonld
index 278ad2f96..7cc3fee40 100644
--- a/priv/static/schemas/litepub-0.1.jsonld
+++ b/priv/static/schemas/litepub-0.1.jsonld
@@ -30,6 +30,7 @@
                 "@type": "@id"
             },
             "EmojiReact": "litepub:EmojiReact",
+            "ChatMessage": "litepub:ChatMessage",
             "alsoKnownAs": {
                 "@id": "as:alsoKnownAs",
                 "@type": "@id"