diff --git a/README.md b/README.md
index 61004d2..f6d2e57 100644
--- a/README.md
+++ b/README.md
@@ -185,6 +185,7 @@ session. When you no longer need to use a session you should make sure to close
 | session             | Optional. Will send the request from and existing browser instance. If one is not sent it will create a temporary instance that will be destroyed immediately after the request is completed.                                                                                                                                                |
 | session_ttl_minutes | Optional. FlareSolverr will automatically rotate expired sessions based on the TTL provided in minutes.                                                                                                                                                                                                                                      |
 | maxTimeout          | Optional, default value 60000. Max timeout to solve the challenge in milliseconds.                                                                                                                                                                                                                                                           |
+| userAgent           | Optional. Used for the current request and does not affect subsequent ones.                                                                                                                                                                                                                                                                  |
 | cookies             | Optional. Will be used by the headless browser. Eg: `"cookies": [{"name": "cookie1", "value": "value1"}, {"name": "cookie2", "value": "value2"}]`.                                                                                                                                                                                           |
 | returnOnlyCookies   | Optional, default false. Only returns the cookies. Response data, headers and other parts of the response are removed.                                                                                                                                                                                                                       |
 | proxy               | Optional, default disabled. Eg: `"proxy": {"url": "http://127.0.0.1:8888"}`. You must include the proxy schema in the URL: `http://`, `socks4://` or `socks5://`. Authorization (username/password) is supported. (When the `session` parameter is set, the proxy is ignored; a session specific proxy can be set in `sessions.create`.) |
diff --git a/src/dtos.py b/src/dtos.py
index 1e9aace..de5bb20 100644
--- a/src/dtos.py
+++ b/src/dtos.py
@@ -35,7 +35,7 @@ class V1RequestBase(object):
     session: str = None
     session_ttl_minutes: int = None
     headers: list = None  # deprecated v2.0.0, not used
-    userAgent: str = None  # deprecated v2.0.0, not used
+    userAgent: str = None
 
     # V1Request
     url: str = None
diff --git a/src/flaresolverr_service.py b/src/flaresolverr_service.py
index 15c7fb0..bb41490 100644
--- a/src/flaresolverr_service.py
+++ b/src/flaresolverr_service.py
@@ -295,6 +295,9 @@ def _evil_logic(req: V1RequestBase, driver: ChromiumPage, method: str) -> Challe
     res.status = STATUS_OK
     res.message = ""
 
+    old_user_agent = utils.get_user_agent(driver)
+    if req.userAgent is not None and req.userAgent != "":
+        driver.set.user_agent(ua=req.userAgent)
 
     # navigate to the page
     logging.debug('Navigating to... %s', req.url)
@@ -370,7 +373,10 @@ def _evil_logic(req: V1RequestBase, driver: ChromiumPage, method: str) -> Challe
             challenge_res.headers = data.response.headers.copy()
 
     challenge_res.cookies = driver.cookies()
-    challenge_res.userAgent = utils.get_user_agent(driver)
+    challenge_res.userAgent = req.userAgent or utils.get_user_agent(driver)
+
+    if old_user_agent:
+        driver.set.user_agent(ua=old_user_agent)
 
     res.result = challenge_res
     return res