diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9f5cc88..051c480 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,11 @@
+6.6.0
+-----
+
+- Set a configurable default IMAP timeout of 30 seconds
+- Set a configurable maximum of 4 IMAP timeout retry attempts
+- Add support for reading ``MBOX`` files
+- Set a configurable elasticsearch timeout of 60 seconds
+
 6.5.5
 -----
 
diff --git a/parsedmarc/__init__.py b/parsedmarc/__init__.py
index 4a3dc03..b9018e0 100644
--- a/parsedmarc/__init__.py
+++ b/parsedmarc/__init__.py
@@ -19,6 +19,7 @@ import binascii
 import email
 import tempfile
 import email.utils
+import mailbox
 
 import mailparser
 from expiringdict import ExpiringDict
@@ -31,7 +32,7 @@ from parsedmarc.utils import is_outlook_msg, convert_outlook_msg
 from parsedmarc.utils import timestamp_to_human, human_timestamp_to_datetime
 from parsedmarc.utils import parse_email
 
-__version__ = "6.5.4"
+__version__ = "6.6.0"
 
 logging.basicConfig(
     format='%(levelname)8s:%(filename)s:%(lineno)d:'
@@ -914,7 +915,6 @@ def get_dmarc_reports_from_mbox(input_, nameservers=None, dns_timeout=2.0,
         OrderedDict: Lists of  ``aggregate_reports`` and ``forensic_reports``
 
     """
-    import mailbox
     aggregate_reports = []
     forensic_reports = []
     try:
diff --git a/parsedmarc/elastic.py b/parsedmarc/elastic.py
index ebc642a..72761a0 100644
--- a/parsedmarc/elastic.py
+++ b/parsedmarc/elastic.py
@@ -169,7 +169,7 @@ class AlreadySaved(ValueError):
     """Raised when a report to be saved matches an existing report"""
 
 
-def set_hosts(hosts, use_ssl=False, ssl_cert_path=None):
+def set_hosts(hosts, use_ssl=False, ssl_cert_path=None, timeout=60.0):
     """
     Sets the Elasticsearch hosts to use
 
@@ -177,12 +177,13 @@ def set_hosts(hosts, use_ssl=False, ssl_cert_path=None):
         hosts (str): A single hostname or URL, or list of hostnames or URLs
         use_ssl (bool): Use a HTTPS connection to the server
         ssl_cert_path (str): Path to the certificate chain
+        timeout (float): Timeout in seconds
     """
     if type(hosts) != list:
         hosts = [hosts]
     conn_params = {
         "hosts": hosts,
-        "timeout": 20
+        "timeout": timeout
     }
     if use_ssl:
         conn_params['use_ssl'] = True
diff --git a/setup.py b/setup.py
index bec6b75..ab2f217 100644
--- a/setup.py
+++ b/setup.py
@@ -14,7 +14,7 @@ from setuptools import setup
 from codecs import open
 from os import path
 
-__version__ = "6.5.5"
+__version__ = "6.6.0"
 
 description = "A Python package and CLI for parsing aggregate and " \
               "forensic DMARC reports"