diff --git a/CHANGES/1097.bugfix.rst b/CHANGES/1097.bugfix.rst
new file mode 100644
index 000000000..1ebcddb05
--- /dev/null
+++ b/CHANGES/1097.bugfix.rst
@@ -0,0 +1 @@
+Added missing type on :meth:`~yarl.URL.port` -- by :user:`bdraco`.
diff --git a/yarl/_url.py b/yarl/_url.py
index 0a3961bdb..0153c81be 100644
--- a/yarl/_url.py
+++ b/yarl/_url.py
@@ -563,7 +563,7 @@ def host(self) -> Optional[str]:
         return _idna_decode(raw)
 
     @cached_property
-    def port(self):
+    def port(self) -> Optional[int]:
         """Port part of URL, with scheme-based fallback.
 
         None for relative URLs or URLs without explicit port and