diff --git a/.deepsource.toml b/.deepsource.toml
deleted file mode 100644
index f772ce8c..00000000
--- a/.deepsource.toml
+++ /dev/null
@@ -1,10 +0,0 @@
-version = 1
-
-test_patterns = ["tests/**"]
-
-[[analyzers]]
-name = "python"
-enabled = true
-
-  [analyzers.meta]
-  runtime_version = "3.x.x"
diff --git a/googlemaps/__init__.py b/googlemaps/__init__.py
index 6649d28a..803bf5a9 100644
--- a/googlemaps/__init__.py
+++ b/googlemaps/__init__.py
@@ -15,7 +15,7 @@
 # the License.
 #
 
-__version__ = "4.4.7"
+__version__ = "4.5.0"
 
 from googlemaps.client import Client
 from googlemaps import exceptions
diff --git a/googlemaps/client.py b/googlemaps/client.py
index 7b84b7b4..1334571d 100644
--- a/googlemaps/client.py
+++ b/googlemaps/client.py
@@ -54,6 +54,7 @@ def __init__(self, key=None, client_id=None, client_secret=None,
                  retry_timeout=60, requests_kwargs=None,
                  queries_per_second=50, channel=None,
                  retry_over_query_limit=True, experience_id=None, 
+                 requests_session=None,
                  base_url=_DEFAULT_BASE_URL):
         """
         :param key: Maps API key. Required, unless "client_id" and
@@ -116,6 +117,9 @@ def __init__(self, key=None, client_id=None, client_secret=None,
             implemented. See the official requests docs for more info:
             http://docs.python-requests.org/en/latest/api/#main-interface
         :type requests_kwargs: dict
+
+        :param requests_session: Reused persistent session for flexibility.
+        :type requests_session: requests.Session
         
         :param base_url: The base URL for all requests. Defaults to the Maps API
             server. Should not have a trailing slash.
@@ -136,7 +140,7 @@ def __init__(self, key=None, client_id=None, client_secret=None,
                     "and hyphen (-) characters are allowed. If used without "
                     "client_id, it must be 0-999.")
 
-        self.session = requests.Session()
+        self.session = requests_session or requests.Session()
         self.key = key
 
         if timeout and (connect_timeout or read_timeout):
diff --git a/setup.py b/setup.py
index 99273db0..c2a605ba 100644
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@
 
 setup(
     name="googlemaps",
-    version="4.4.7",
+    version="4.5.0",
     description="Python client library for Google Maps Platform",
     long_description=readme + changelog,
     long_description_content_type="text/markdown",