diff --git a/adafruit_azureiot/base64.py b/adafruit_azureiot/base64.py
index 4cce82d..ab74bec 100644
--- a/adafruit_azureiot/base64.py
+++ b/adafruit_azureiot/base64.py
@@ -46,8 +46,8 @@
 def _bytes_from_decode_data(data: str):
     try:
         return data.encode("ascii")
-    except:
-        raise ValueError("string argument should contain only ASCII characters")
+    except Exception as exc:
+        raise ValueError("string argument should contain only ASCII characters") from exc
 
 
 def b64encode(toencode: bytes) -> bytes:
diff --git a/adafruit_azureiot/device_registration.py b/adafruit_azureiot/device_registration.py
index 6b1f8ef..15f85df 100644
--- a/adafruit_azureiot/device_registration.py
+++ b/adafruit_azureiot/device_registration.py
@@ -49,7 +49,7 @@ class DeviceRegistrationError(Exception):
     """
 
     def __init__(self, message):
-        super(DeviceRegistrationError, self).__init__(message)
+        super().__init__(message)
         self.message = message
 
 
@@ -104,7 +104,7 @@ def _loop_assign(self, operation_id, headers) -> str:
         except ValueError as error:
             err = "ERROR: " + str(error) + " => " + str(response)
             self._logger.error(err)
-            raise DeviceRegistrationError(err)
+            raise DeviceRegistrationError(err) from error
 
         loop_try = 0
 
@@ -225,7 +225,7 @@ def register_device(self, expiry: int) -> str:
         except ValueError as error:
             err = "ERROR: non JSON is received from " + constants.DPS_END_POINT + " => " + str(response) + " .. message : " + str(error)
             self._logger.error(err)
-            raise DeviceRegistrationError(err)
+            raise DeviceRegistrationError(err) from error
 
         if "errorCode" in data:
             err = "DPS => " + str(data)
diff --git a/adafruit_azureiot/iot_error.py b/adafruit_azureiot/iot_error.py
index 767351c..1ca604b 100644
--- a/adafruit_azureiot/iot_error.py
+++ b/adafruit_azureiot/iot_error.py
@@ -38,5 +38,5 @@ def __init__(self, message: str):
         """Create the IoT Error
         :param str message: The error message
         """
-        super(IoTError, self).__init__(message)
+        super().__init__(message)
         self.message = message
diff --git a/adafruit_azureiot/iot_mqtt.py b/adafruit_azureiot/iot_mqtt.py
index 6d61b91..04f53f2 100644
--- a/adafruit_azureiot/iot_mqtt.py
+++ b/adafruit_azureiot/iot_mqtt.py
@@ -31,8 +31,8 @@
 import gc
 import json
 import time
-import adafruit_minimqtt as minimqtt
-from adafruit_minimqtt import MQTT
+import adafruit_minimqtt.adafruit_minimqtt as minimqtt
+from adafruit_minimqtt.adafruit_minimqtt import MQTT
 import adafruit_logging as logging
 from .iot_error import IoTError
 from .keys import compute_derived_symmetric_key
diff --git a/adafruit_azureiot/iothub_device.py b/adafruit_azureiot/iothub_device.py
index c7900d6..bba43ba 100755
--- a/adafruit_azureiot/iothub_device.py
+++ b/adafruit_azureiot/iothub_device.py
@@ -146,8 +146,8 @@ def __init__(self, socket, iface, device_connection_string: str, token_expires:
         try:
             cs_args = device_connection_string.split(DELIMITER)
             connection_string_values = dict(arg.split(VALUE_SEPARATOR, 1) for arg in cs_args)
-        except (ValueError, AttributeError):
-            raise ValueError("Connection string is required and should not be empty or blank and must be supplied as a string")
+        except (ValueError, AttributeError) as e:
+            raise ValueError("Connection string is required and should not be empty or blank and must be supplied as a string") from e
 
         if len(cs_args) != len(connection_string_values):
             raise ValueError("Invalid Connection String - Unable to parse")
diff --git a/adafruit_azureiot/quote.py b/adafruit_azureiot/quote.py
index 5c8dd7a..704188c 100644
--- a/adafruit_azureiot/quote.py
+++ b/adafruit_azureiot/quote.py
@@ -128,7 +128,7 @@ class Quoter(defaultdict):
     # of cached keys don't call Python code at all).
     def __init__(self, safe):
         """safe: bytes object."""
-        super(Quoter, self).__init__()
+        super().__init__()
         self.safe = _ALWAYS_SAFE.union(safe)
 
     def __missing__(self, b):