diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3c22918a..24ac59c2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,24 @@ All notable changes to this project will be documented in this file.
 Given the high speed of development in the first phase, changes are being
 reported only starting from v0.20.2.
 
-## [0.24.0]
+## [0.24.2] - 2022-12-10
+
+## Fixed
+
+- The `main.db` configuration should use the configured `workdir` when no
+  values are specified.
+
+- The `zwave.mqtt` is now compatible both with older (i.e. `zwavejs2mqtt`) and
+  newer (i.e. `ZwaveJS`) versions of the backend.
+
+## [0.24.1] - 2022-12-08
+
+### Fixed
+
+- Removed a parenthesized context manager that broke compatibility with
+  Python < 3.10.
+
+## [0.24.0] - 2022-11-22
 
 ### Added
 
diff --git a/platypush/__init__.py b/platypush/__init__.py
index 97b9016e..f31b198c 100644
--- a/platypush/__init__.py
+++ b/platypush/__init__.py
@@ -25,7 +25,7 @@ from .message.response import Response
 from .utils import set_thread_name, get_enabled_plugins
 
 __author__ = 'Fabio Manganiello <info@fabiomanganiello.com>'
-__version__ = '0.24.0'
+__version__ = '0.24.2'
 
 log = logging.getLogger('platypush')
 
diff --git a/platypush/backend/zwave/mqtt/__init__.py b/platypush/backend/zwave/mqtt/__init__.py
index 399e9886..fd7ca8c4 100644
--- a/platypush/backend/zwave/mqtt/__init__.py
+++ b/platypush/backend/zwave/mqtt/__init__.py
@@ -185,7 +185,9 @@ class ZwaveMqttBackend(MqttBackend):
             if not msg.topic.startswith(self.events_topic):
                 return
 
-            topic = msg.topic[len(self.events_topic) + 1 :].split('/').pop()
+            topic = (
+                msg.topic[(len(self.events_topic) + 1) :].split('/').pop()  # noqa: E203
+            )
             data = msg.payload.decode()
             if not data:
                 return
diff --git a/platypush/config/__init__.py b/platypush/config/__init__.py
index cb5ab789..addba07f 100644
--- a/platypush/config/__init__.py
+++ b/platypush/config/__init__.py
@@ -10,6 +10,7 @@ import re
 import shutil
 import socket
 import sys
+from urllib.parse import quote
 from typing import Optional
 
 import yaml
@@ -72,7 +73,7 @@ class Config:
         if cfgfile is None:
             cfgfile = self._create_default_config()
 
-        self._cfgfile = os.path.abspath(os.path.expanduser(cfgfile))
+        cfgfile = self._cfgfile = os.path.abspath(os.path.expanduser(cfgfile))
         self._config = self._read_config_file(self._cfgfile)
 
         if 'token' in self._config:
@@ -80,6 +81,7 @@ class Config:
 
         if 'workdir' not in self._config:
             self._config['workdir'] = self._workdir_location
+        self._config['workdir'] = os.path.expanduser(self._config['workdir'])
         os.makedirs(self._config['workdir'], exist_ok=True)
 
         if 'scripts_dir' not in self._config:
@@ -94,6 +96,7 @@ class Config:
             )
         os.makedirs(self._config['dashboards_dir'], mode=0o755, exist_ok=True)
 
+        # Create a default (empty) __init__.py in the scripts folder
         init_py = os.path.join(self._config['scripts_dir'], '__init__.py')
         if not os.path.isfile(init_py):
             with open(init_py, 'w') as f:
@@ -106,15 +109,21 @@ class Config:
         )
         sys.path = [scripts_parent_dir] + sys.path
 
-        self._config['db'] = self._config.get(
-            'main.db',
-            {
-                'engine': 'sqlite:///'
-                + os.path.join(
-                    os.path.expanduser('~'), '.local', 'share', 'platypush', 'main.db'
+        # Initialize the default db connection string
+        db_engine = self._config.get('main.db', '')
+        if db_engine:
+            if isinstance(db_engine, str):
+                db_engine = {
+                    'engine': db_engine,
+                }
+        else:
+            db_engine = {
+                'engine': 'sqlite:///' + os.path.join(
+                    quote(self._config['workdir']), 'main.db'
                 )
-            },
-        )
+            }
+
+        self._config['db'] = db_engine
 
         logging_config = {
             'level': logging.INFO,
diff --git a/platypush/utils/__init__.py b/platypush/utils/__init__.py
index 14ee7945..48ae4ab9 100644
--- a/platypush/utils/__init__.py
+++ b/platypush/utils/__init__.py
@@ -357,7 +357,7 @@ def grouper(n, iterable, fillvalue=None):
     args = [iter(iterable)] * n
 
     if fillvalue:
-        return zip_longest(fillvalue=fillvalue, *args)
+        return zip_longest(*args, fillvalue=fillvalue)
 
     for chunk in zip_longest(*args):
         yield filter(None, chunk)
@@ -389,8 +389,9 @@ def run(action, *args, **kwargs):
     return response.output
 
 
-def generate_rsa_key_pair(key_file: Optional[str] = None, size: int = 2048) \
-        -> Tuple[PublicKey, PrivateKey]:
+def generate_rsa_key_pair(
+    key_file: Optional[str] = None, size: int = 2048
+) -> Tuple[PublicKey, PrivateKey]:
     """
     Generate an RSA key pair.
 
@@ -434,10 +435,7 @@ def get_or_generate_jwt_rsa_key_pair():
     pub_key_file = priv_key_file + '.pub'
 
     if os.path.isfile(priv_key_file) and os.path.isfile(pub_key_file):
-        with (
-            open(pub_key_file, 'r') as f1,
-            open(priv_key_file, 'r') as f2
-        ):
+        with open(pub_key_file, 'r') as f1, open(priv_key_file, 'r') as f2:
             return (
                 rsa.PublicKey.load_pkcs1(f1.read().encode()),
                 rsa.PrivateKey.load_pkcs1(f2.read().encode()),
diff --git a/setup.cfg b/setup.cfg
index 5882e785..e29cbd8e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.24.0
+current_version = 0.24.2
 commit = True
 tag = True
 
diff --git a/setup.py b/setup.py
index 86abd2dd..16bacf3a 100755
--- a/setup.py
+++ b/setup.py
@@ -28,7 +28,7 @@ backend = pkg_files('platypush/backend')
 
 setup(
     name="platypush",
-    version="0.24.0",
+    version="0.24.2",
     author="Fabio Manganiello",
     author_email="info@fabiomanganiello.com",
     description="Platypush service",