diff --git a/aiogoogle/__version__.py b/aiogoogle/__version__.py
index 7c769f9..ba10f2c 100644
--- a/aiogoogle/__version__.py
+++ b/aiogoogle/__version__.py
@@ -2,7 +2,7 @@
 __about__ = "Async Google API client"
 __description__ = __about__
 __url__ = "https://github.com/omarryhan/aiogoogle"
-__version_info__ = ("1", "1", "2")
+__version_info__ = ("1", "1", "3")
 __version__ = ".".join(__version_info__)
 __author__ = "Omar Ryhan"
 __author_email__ = "omarryhan@gmail.com"
diff --git a/aiogoogle/auth/utils.py b/aiogoogle/auth/utils.py
index e9c8c98..bed0c05 100644
--- a/aiogoogle/auth/utils.py
+++ b/aiogoogle/auth/utils.py
@@ -18,6 +18,9 @@ def _get_expires_at(expires_in):
 
 
 def _is_expired(expires_at):
+    # Refresh in case there's no expires_at present
+    if expires_at is None:
+        return True
     if not isinstance(expires_at, datetime.datetime):
         expires_at = datetime.datetime.fromisoformat(expires_at)
     if datetime.datetime.utcnow() >= expires_at:
diff --git a/aiogoogle/models.py b/aiogoogle/models.py
index 78e7641..99f3374 100644
--- a/aiogoogle/models.py
+++ b/aiogoogle/models.py
@@ -129,6 +129,8 @@ class Request:
         callback (callable): Synchronous callback that takes the content of the response as the only argument. Should also return content.
 
         _verify_ssl (boolean): Defaults to True.
+
+        upload_file_content_type (str): Optional content-type header string. In case you don't want to use the default application/octet-stream (Or whatever is auto-detected by your transport handler)
         """
 
     def __init__(
@@ -144,6 +146,7 @@ def __init__(
         timeout=None,
         callback=None,
         _verify_ssl=True,
+        upload_file_content_type=None,
     ):
         self.method = method
         self.url = url
@@ -159,6 +162,7 @@ def __init__(
         self.timeout = timeout
         self.callback = callback
         self._verify_ssl = _verify_ssl
+        self.upload_file_content_type = upload_file_content_type
 
     def _add_query_param(self, query: dict):
         url = self.url
diff --git a/aiogoogle/sessions/aiohttp_session.py b/aiogoogle/sessions/aiohttp_session.py
index 6880d27..6ca67af 100644
--- a/aiogoogle/sessions/aiohttp_session.py
+++ b/aiogoogle/sessions/aiohttp_session.py
@@ -101,10 +101,19 @@ async def fire_request(request):
                             _aiter_file(
                                 request.media_upload.file_path,
                                 request.media_upload.chunk_size
-                            )
+                            ),
+                            headers={"Content-Type": request.upload_file_content_type} if request.upload_file_content_type else None
                         )
                         if request.json:
                             mpwriter.append_json(request.json)
+
+                        req_content_type = (request.upload_file_content_type or "multipart/related") if not request.json else "multipart/related"
+
+                        request.headers.update({"Content-Type": f"{req_content_type}; boundary={mpwriter.boundary}"})
+
+                        # Aiohttp already handles this for us. Also the line below doesn't work. dk why.
+                        # request.headers.update({"Content-Length": str(size)})
+
                         return await self.request(
                             method=request.method,
                             url=request.media_upload.upload_path,
@@ -119,6 +128,8 @@ async def fire_request(request):
                         request.media_upload.file_path, "rb"
                     ) as file:
                         read_file = await file.read()
+                        if request.upload_file_content_type:
+                            request.headers.update({"Content-Type": request.upload_file_content_type})
                         return await self.request(
                             method=request.method,
                             url=request.media_upload.upload_path,
diff --git a/examples/upload_drive_file.py b/examples/upload_drive_file.py
index 3354609..b0c9493 100755
--- a/examples/upload_drive_file.py
+++ b/examples/upload_drive_file.py
@@ -11,14 +11,14 @@ async def upload_file(full_path, new_name):
         # Create API
         drive_v3 = await aiogoogle.discover("drive", "v3")
 
-        # Upload file
-        upload_res = await aiogoogle.as_user(
-            drive_v3.files.create(
-                upload_file=full_path,
-                fields="id",
-                json={"name": new_name}
-            )
+        req = drive_v3.files.create(
+            upload_file=full_path,
+            fields="id",
+            json={"name": new_name}
         )
+
+        # Upload file
+        upload_res = await aiogoogle.as_user(req)
         print("Uploaded {} successfully.\nFile ID: {}".format(full_path, upload_res['id']))
         # file_id = upload_res["id"]
         # # Rename uploaded file