diff --git a/platypush/builder/_base.py b/platypush/builder/_base.py
index 73cf69c8a7..5bc139f479 100644
--- a/platypush/builder/_base.py
+++ b/platypush/builder/_base.py
@@ -5,7 +5,7 @@ import logging
 import os
 import pathlib
 import sys
-from typing import Final, Optional, Sequence
+from typing import Optional, Sequence
 
 from platypush.config import Config
 from platypush.utils.manifest import (
@@ -29,7 +29,7 @@ class BaseBuilder(ABC):
     and :module:`platypush.platydock` modules/scripts.
     """
 
-    REPO_URL: Final[str] = 'https://github.com/BlackLight/platypush.git'
+    REPO_URL: str = 'https://github.com/BlackLight/platypush.git'
     """
     We use the Github URL here rather than the self-hosted Gitea URL to prevent
     too many requests to the Gitea server.
diff --git a/platypush/bus/redis.py b/platypush/bus/redis.py
index 83ded8aff7..40cd7350fa 100644
--- a/platypush/bus/redis.py
+++ b/platypush/bus/redis.py
@@ -1,6 +1,6 @@
 import logging
 import threading
-from typing import Final, Optional
+from typing import Optional
 
 from platypush.bus import Bus
 from platypush.message import Message
@@ -13,7 +13,7 @@ class RedisBus(Bus):
     Overrides the in-process in-memory local bus with a Redis bus
     """
 
-    DEFAULT_REDIS_QUEUE: Final[str] = 'platypush/bus'
+    DEFAULT_REDIS_QUEUE: str = 'platypush/bus'
 
     def __init__(self, *args, on_message=None, redis_queue=None, **kwargs):
         from platypush.utils import get_redis
diff --git a/platypush/entities/_base.py b/platypush/entities/_base.py
index 2a739124a6..cc76450f3c 100644
--- a/platypush/entities/_base.py
+++ b/platypush/entities/_base.py
@@ -7,7 +7,7 @@ import subprocess
 import sys
 import types
 from datetime import datetime
-from typing import Callable, Dict, Final, List, Optional, Set, Type, Tuple, Any
+from typing import Callable, Dict, List, Optional, Set, Type, Tuple, Any
 
 import pkgutil
 
@@ -41,7 +41,7 @@ EntityKey = Tuple[str, str]
 EntityMapping = Dict[EntityKey, 'Entity']
 """ Internal mapping for entities used for deduplication/merge/upsert. """
 
-_import_error_ignored_modules: Final[Set[str]] = {'bluetooth'}
+_import_error_ignored_modules: Set[str] = {'bluetooth'}
 """
 ImportError exceptions will be ignored for these entity submodules when
 imported dynamically. An ImportError for these modules means that some optional
diff --git a/platypush/plugins/mqtt/__init__.py b/platypush/plugins/mqtt/__init__.py
index cdb6e49078..3dc62e5e26 100644
--- a/platypush/plugins/mqtt/__init__.py
+++ b/platypush/plugins/mqtt/__init__.py
@@ -469,8 +469,9 @@ class MqttPlugin(RunnablePlugin):
         client.stop()
         del client
 
-    @staticmethod
-    def _response_callback(reply_topic: str, event: threading.Event, buffer: IO[bytes]):
+    def _response_callback(
+        self, reply_topic: str, event: threading.Event, buffer: IO[bytes]
+    ):
         """
         A response callback that writes the response to an IOBuffer and stops
         the client loop.
@@ -480,9 +481,15 @@ class MqttPlugin(RunnablePlugin):
             if msg.topic != reply_topic:
                 return
 
-            buffer.write(msg.payload)
-            client.loop_stop()
-            event.set()
+            try:
+                buffer.write(msg.payload)
+                client.loop_stop()
+            except Exception as e:
+                self.logger.warning(
+                    'Could not write the response back to the MQTT client: %s', e
+                )
+            finally:
+                event.set()
 
         return on_message
 
diff --git a/platypush/plugins/mqtt/_client.py b/platypush/plugins/mqtt/_client.py
index 5ef0c9d4d8..a82cd1ba89 100644
--- a/platypush/plugins/mqtt/_client.py
+++ b/platypush/plugins/mqtt/_client.py
@@ -2,14 +2,14 @@ from enum import IntEnum
 import logging
 import os
 import threading
-from typing import Any, Callable, Dict, Final, Iterable, Optional, Union
+from typing import Any, Callable, Dict, Iterable, Optional, Union
 
 import paho.mqtt.client as mqtt
 
 from platypush.config import Config
 
 MqttCallback = Callable[["MqttClient", Any, mqtt.MQTTMessage], Any]
-DEFAULT_TIMEOUT: Final[int] = 30
+DEFAULT_TIMEOUT: int = 30
 
 
 class MqttClient(mqtt.Client, threading.Thread):
diff --git a/platypush/plugins/rss/__init__.py b/platypush/plugins/rss/__init__.py
index e7ad1d1773..4df6a24625 100644
--- a/platypush/plugins/rss/__init__.py
+++ b/platypush/plugins/rss/__init__.py
@@ -72,7 +72,9 @@ class RssPlugin(RunnablePlugin):
         t = var.get(varname)
 
         if t:
-            return dateutil.parser.isoparse(t)
+            if not isinstance(t, datetime.datetime):
+                t = dateutil.parser.isoparse(t)
+            return t
 
         return None
 
diff --git a/setup.py b/setup.py
index b9ea662eb0..8919f97061 100755
--- a/setup.py
+++ b/setup.py
@@ -43,6 +43,11 @@ setup(
             'migrations/alembic.ini',
             'migrations/alembic/*',
             'migrations/alembic/**/*',
+            'install/**',
+            'install/scripts/*',
+            'install/scripts/**/*',
+            'install/requirements/*',
+            'install/docker/*',
         ],
     },
     entry_points={