diff --git a/src/openapi/openapi-3.0.yaml b/src/openapi/openapi-3.0.yaml
index 9c77116..f828388 100644
--- a/src/openapi/openapi-3.0.yaml
+++ b/src/openapi/openapi-3.0.yaml
@@ -34,6 +34,11 @@ components:
       in: header
       name: Accept-Language
       type: apiKey
+    Priority:
+      description: "u=1, i"
+      in: header
+      name: Priority
+      type: apiKey
     Referer:
       description: "https://x.com/home"
       in: header
@@ -133,6 +138,7 @@ security:
   - Accept: []
   - AcceptEncoding: []
   - AcceptLanguage: []
+  - Priority: []
   - Referer: []
   - SecChUa: []
   - SecChUaMobile: []
diff --git a/test/python/test_serialize.py b/test/python/test_serialize.py
index 69f5b93..f6fc152 100644
--- a/test/python/test_serialize.py
+++ b/test/python/test_serialize.py
@@ -255,6 +255,7 @@ if __name__ == "__main__":
                 "sec-ch-ua-platform": '"Windows"',
                 "accept-encoding": "identity",
                 "referer": twitter_url,
+                "priority": "u=1, i",
                 "authorization": f"Bearer {access_token}",
                 "x-twitter-auth-type": "OAuth2Session",
                 "x-twitter-client-language": "en",