diff --git a/modules/openapi-generator/src/main/resources/python/asyncio/rest.mustache b/modules/openapi-generator/src/main/resources/python/asyncio/rest.mustache
index 39003abfbfdc..8c9d49dc14f9 100644
--- a/modules/openapi-generator/src/main/resources/python/asyncio/rest.mustache
+++ b/modules/openapi-generator/src/main/resources/python/asyncio/rest.mustache
@@ -10,6 +10,7 @@ import ssl
 
 import aiohttp
 import certifi
+import asyncio
 # python 2 and python 3 compatibility library
 from six.moves.urllib.parse import urlencode
 
@@ -70,6 +71,9 @@ class RESTClientObject(object):
                 connector=connector
             )
 
+    def __del__(self):
+        asyncio.ensure_future(self.pool_manager.close())
+
     async def request(self, method, url, query_params=None, headers=None,
                       body=None, post_params=None, _preload_content=True,
                       _request_timeout=None):
@@ -152,15 +156,17 @@ class RESTClientObject(object):
                          declared content type."""
                 raise ApiException(status=0, reason=msg)
 
-        async with self.pool_manager.request(**args) as r:
+        r = await self.pool_manager.request(**args)
+        if _preload_content:
+
             data = await r.text()
             r = RESTResponse(r, data)
 
-        # log response body
-        logger.debug("response body: %s", r.data)
+            # log response body
+            logger.debug("response body: %s", r.data)
 
-        if not 200 <= r.status <= 299:
-            raise ApiException(http_resp=r)
+            if not 200 <= r.status <= 299:
+                raise ApiException(http_resp=r)
 
         return r
 
diff --git a/samples/client/petstore/python-asyncio/petstore_api/rest.py b/samples/client/petstore/python-asyncio/petstore_api/rest.py
index f25b4bbe9a29..f0ac582a697f 100644
--- a/samples/client/petstore/python-asyncio/petstore_api/rest.py
+++ b/samples/client/petstore/python-asyncio/petstore_api/rest.py
@@ -18,6 +18,7 @@
 
 import aiohttp
 import certifi
+import asyncio
 # python 2 and python 3 compatibility library
 from six.moves.urllib.parse import urlencode
 
@@ -78,6 +79,9 @@ def __init__(self, configuration, pools_size=4, maxsize=4):
                 connector=connector
             )
 
+    def __del__(self):
+        asyncio.ensure_future(self.pool_manager.close())
+
     async def request(self, method, url, query_params=None, headers=None,
                       body=None, post_params=None, _preload_content=True,
                       _request_timeout=None):
@@ -160,15 +164,17 @@ async def request(self, method, url, query_params=None, headers=None,
                          declared content type."""
                 raise ApiException(status=0, reason=msg)
 
-        async with self.pool_manager.request(**args) as r:
+        r = await self.pool_manager.request(**args)
+        if _preload_content:
+
             data = await r.text()
             r = RESTResponse(r, data)
 
-        # log response body
-        logger.debug("response body: %s", r.data)
+            # log response body
+            logger.debug("response body: %s", r.data)
 
-        if not 200 <= r.status <= 299:
-            raise ApiException(http_resp=r)
+            if not 200 <= r.status <= 299:
+                raise ApiException(http_resp=r)
 
         return r