diff --git a/setup.py b/setup.py
index 6ae3bd78..af42de74 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
 
 if sys.version_info < (3, 7):
     raise RuntimeError("skyflow requires Python 3.7+")
-current_version = '2.1.0b1.dev0+8efd1cd'
+current_version = '1.15.4.dev0+ef26f0d'
 
 setup(
     name='skyflow',
diff --git a/skyflow/vault/_client.py b/skyflow/vault/_client.py
index e426f59f..fb249b77 100644
--- a/skyflow/vault/_client.py
+++ b/skyflow/vault/_client.py
@@ -5,6 +5,8 @@
 import types
 import requests
 import asyncio
+from urllib3.util.retry import Retry
+from requests.adapters import HTTPAdapter
 from skyflow.vault._insert import getInsertRequestBody, processResponse, convertResponse
 from skyflow.vault._update import sendUpdateRequests, createUpdateResponseBody
 from skyflow.vault._config import Configuration, ConnectionConfig, DeleteOptions, DetokenizeOptions, GetOptions, InsertOptions, UpdateOptions, QueryOptions
@@ -36,6 +38,18 @@ def __init__(self, config: Configuration):
             raise SkyflowError(SkyflowErrorCodes.INVALID_INPUT, SkyflowErrorMessages.TOKEN_PROVIDER_ERROR.value % (
                 str(type(config.tokenProvider))), interface=interface)
 
+        retry_strategy = Retry(
+            total=3,
+            connect=5,
+            backoff_factor=0.5,
+            status_forcelist=[500, 502, 503, 504],
+            raise_on_status=True,
+        )
+
+        self.session = requests.Session()
+        adapter = HTTPAdapter(pool_connections=1, pool_maxsize=20, pool_block=False, max_retries=retry_strategy)
+        self.session.mount("https://", adapter)
+
         self.vaultID = config.vaultID
         self.vaultURL = config.vaultURL.rstrip('/')
         self.tokenProvider = config.tokenProvider
@@ -45,7 +59,6 @@ def __init__(self, config: Configuration):
     def insert(self, records: dict, options: InsertOptions = InsertOptions()):
         interface = InterfaceName.INSERT.value
         log_info(InfoMessages.INSERT_TRIGGERED.value, interface=interface)
-
         self._checkConfig(interface)
 
         jsonBody = getInsertRequestBody(records, options)
@@ -54,11 +67,19 @@ def insert(self, records: dict, options: InsertOptions = InsertOptions()):
             self.storedToken, self.tokenProvider, interface)
         headers = {
             "Authorization": "Bearer " + self.storedToken,
-            "sky-metadata": json.dumps(getMetrics())
+            "sky-metadata": json.dumps(getMetrics()),
+            # "User-Agent": 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36'
         }
-
-        response = requests.post(requestURL, data=jsonBody, headers=headers)
+        # response = requests.post(requestURL, data=jsonBody, headers=headers)
+        response = self.session.post(
+            requestURL,
+            data=jsonBody,
+            headers=headers,
+            # timeout=(5, 300),
+        )
+        print(">>> raw response: ", response.history)
         processedResponse = processResponse(response)
+        print(">>> processedResponse local: ", processedResponse)
         result, partial = convertResponse(records, processedResponse, options)
         if partial:
             log_error(SkyflowErrorMessages.BATCH_INSERT_PARTIAL_SUCCESS.value, interface)
diff --git a/skyflow/version.py b/skyflow/version.py
index 70fdf1c4..37d07012 100644
--- a/skyflow/version.py
+++ b/skyflow/version.py
@@ -1 +1 @@
-SDK_VERSION = '2.1.0b1.dev0+8efd1cd'
\ No newline at end of file
+SDK_VERSION = '1.15.4.dev0+ef26f0d'