diff --git a/.travis.yml b/.travis.yml
index 9886908..dc6c49d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,9 +4,9 @@ cache:
     pip: true
 matrix:
     include:
-        - python: "3.8"
-          env: NOXSESSION="tests-3.8"
-        - python: "3.8"
+        - python: "3.9"
+          env: NOXSESSION="tests-3.9"
+        - python: "3.9"
           env: NOXSESSION="lint"
           dist: xenial
 install:
diff --git a/noxfile.py b/noxfile.py
index 417bce2..a1ecd49 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -3,7 +3,7 @@
 
 nox.options.sessions = ["tests", "lint", "build"]
 
-python = ["3.8"]
+python = ["3.9"]
 
 
 lint_dependencies = [
diff --git a/setup.py b/setup.py
index 70fa689..9631c89 100644
--- a/setup.py
+++ b/setup.py
@@ -31,6 +31,6 @@
     packages=find_packages(),
     setup_requires=[],
     url="https://github.com/upwork/python-upwork",
-    version="2.0.1",
+    version="2.1.0",
     zip_safe=False,
 )
diff --git a/tests/test_client.py b/tests/test_client.py
index c7a8e1d..6525694 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -103,6 +103,7 @@ def test_send_request(self, mocked_get, mocked_post, mocked_put, mocked_delete):
             }
         )
         cl = client.Client(cfg)
+        cl.requests = requests
         assert cl.get("/test/uri", {}) == {"a": "b"}
         assert cl.post("/test/uri", {}) == {"a": "b"}
         assert cl.put("/test/uri", {}) == {"a": "b"}
diff --git a/upwork/__init__.py b/upwork/__init__.py
index 21ab8d4..88f2985 100644
--- a/upwork/__init__.py
+++ b/upwork/__init__.py
@@ -6,6 +6,6 @@
 
 __author__ = """Maksym Novozhylov"""
 __email__ = "mnovozhilov@upwork.com"
-__version__ = "2.0.1"
+__version__ = "2.1.0"
 
 __all__ = ("Config", "Client", "routers")
diff --git a/upwork/client.py b/upwork/client.py
index de79787..f7ba8dc 100644
--- a/upwork/client.py
+++ b/upwork/client.py
@@ -13,6 +13,8 @@
 
 import requests
 from . import upwork
+from requests.adapters import HTTPAdapter
+from requests.packages.urllib3.util.retry import Retry
 from requests_oauthlib import OAuth1 # type: ignore
 from urllib.parse import parse_qsl, urlencode
 
@@ -36,6 +38,9 @@ class Client(object):
     def __init__(self, config):
         self.config = config
 
+        self.requests = requests.Session()
+        self.requests.mount('https://', HTTPAdapter(max_retries=Retry(total=0)))
+
     def get_request_token(self):
         """Get request token"""
         oauth = OAuth1(self.config.consumer_key, self.config.consumer_secret)
@@ -165,13 +170,13 @@ def send_request(self, uri, method="get", params={}):
         url = full_url(get_uri_with_format(uri, self.epoint), self.epoint)
 
         if method == "get":
-            r = requests.get(url, params=params, auth=oauth, verify=self.config.verify_ssl)
+            r = self.requests.get(url, params=params, auth=oauth, verify=self.config.verify_ssl)
         elif method == "put":
             headers = {"Content-type": "application/json"}
-            r = requests.put(url, json=params, headers=headers, auth=oauth, verify=self.config.verify_ssl)
+            r = self.requests.put(url, json=params, headers=headers, auth=oauth, verify=self.config.verify_ssl)
         elif method in {"post", "delete"}:
             headers = {"Content-type": "application/json"}
-            r = requests.post(url, json=params, headers=headers, auth=oauth, verify=self.config.verify_ssl)
+            r = self.requests.post(url, json=params, headers=headers, auth=oauth, verify=self.config.verify_ssl)
         else:
             raise ValueError(
                 'Do not know how to handle http method "{0}"'.format(method)