diff --git a/CHANGES/5228.doc b/CHANGES/5228.doc
new file mode 100644
index 00000000000..22bb5b8c2a6
--- /dev/null
+++ b/CHANGES/5228.doc
@@ -0,0 +1 @@
+Add aiohttp-pydantic to third party libraries
diff --git a/docs/third_party.rst b/docs/third_party.rst
index 104df41e772..d5bcb3df86a 100644
--- a/docs/third_party.rst
+++ b/docs/third_party.rst
@@ -127,6 +127,9 @@ period ask to raise the status.
 - `aiohttp-validate <https://github.com/dchaplinsky/aiohttp_validate>`_
   Simple library that helps you validate your API endpoints requests/responses with json schema.
 
+- `aiohttp-pydantic <https://github.com/Maillol/aiohttp-pydantic>`_
+  An ``aiohttp.View`` to validate the HTTP request's body, query-string, and headers regarding function annotations and generate Open API doc. Python 3.8+ required.
+
 - `raven-aiohttp <https://github.com/getsentry/raven-aiohttp>`_ An
   aiohttp transport for raven-python (Sentry client).