diff --git a/assistants/prospector-assistant/uv.lock b/assistants/prospector-assistant/uv.lock
index eb06707..0558ffd 100644
--- a/assistants/prospector-assistant/uv.lock
+++ b/assistants/prospector-assistant/uv.lock
@@ -175,7 +175,6 @@ dependencies = [
     { name = "context" },
     { name = "pydantic" },
     { name = "pydantic-settings" },
-    { name = "python-magic" },
 ]
 
 [package.metadata]
@@ -183,7 +182,6 @@ requires-dist = [
     { name = "context", editable = "../../libraries/python/context" },
     { name = "pydantic", specifier = ">=2.6.1" },
     { name = "pydantic-settings", specifier = ">=2.5.2" },
-    { name = "python-magic", specifier = ">=0.4.27" },
 ]
 
 [package.metadata.requires-dev]
@@ -1679,15 +1677,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/35/a6/145655273568ee78a581e734cf35beb9e33a370b29c5d3c8fee3744de29f/python_json_logger-2.0.7-py3-none-any.whl", hash = "sha256:f380b826a991ebbe3de4d897aeec42760035ac760345e57b812938dc8b35e2bd", size = 8067 },
 ]
 
-[[package]]
-name = "python-magic"
-version = "0.4.27"
-source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/da/db/0b3e28ac047452d079d375ec6798bf76a036a08182dbb39ed38116a49130/python-magic-0.4.27.tar.gz", hash = "sha256:c1ba14b08e4a5f5c31a302b7721239695b2f0f058d125bd5ce1ee36b9d9d3c3b", size = 14677 }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/6c/73/9f872cb81fc5c3bb48f7227872c28975f998f3e7c2b1c16e95e6432bbb90/python_magic-0.4.27-py2.py3-none-any.whl", hash = "sha256:c212960ad306f700aa0d01e5d7a325d20548ff97eb9920dcd29513174f0294d3", size = 13840 },
-]
-
 [[package]]
 name = "python-multipart"
 version = "0.0.12"
diff --git a/libraries/python/assistant-drive/assistant_drive/drive.py b/libraries/python/assistant-drive/assistant_drive/drive.py
index c44dfe2..62d9fd6 100644
--- a/libraries/python/assistant-drive/assistant_drive/drive.py
+++ b/libraries/python/assistant-drive/assistant_drive/drive.py
@@ -1,6 +1,7 @@
 import io
 import json
 import logging
+import mimetypes
 import os
 import pathlib
 from contextlib import contextmanager
@@ -8,14 +9,12 @@
 from shutil import rmtree
 from typing import Any, BinaryIO, ContextManager, Iterator, TypeVar
 
-import magic
 from context import Context
 from pydantic import BaseModel, Field
 
 # from pydantic_settings import BaseSettings
 
 logger = logging.getLogger(__name__)
-mime = magic.Magic(mime=True)
 
 
 class DriveConfig(BaseModel):
@@ -59,8 +58,8 @@ def __str__(self) -> str:
 
     @staticmethod
     def from_bytes(content: BinaryIO, filename: str, dir: str | None = None) -> "FileMetadata":
-        content_type = mime.from_buffer(content.read())
-        content.seek(0)
+        mime_type, _ = mimetypes.guess_type(filename)
+        content_type = mime_type or "application/octet-stream"
         size = len(content.read())
         return FileMetadata(filename=filename, dir=dir, content_type=content_type, size=size)
 
diff --git a/libraries/python/assistant-drive/pyproject.toml b/libraries/python/assistant-drive/pyproject.toml
index b58792a..01a78b8 100644
--- a/libraries/python/assistant-drive/pyproject.toml
+++ b/libraries/python/assistant-drive/pyproject.toml
@@ -9,7 +9,7 @@ dependencies = [
     "context>=0.1.0",
     "pydantic>=2.6.1",
     "pydantic-settings>=2.5.2",
-    "python-magic>=0.4.27",
+    # "python-magic>=0.4.27",
     # "python-magic-bin>=0.4.14",
 ]
 
diff --git a/libraries/python/assistant-drive/uv.lock b/libraries/python/assistant-drive/uv.lock
index cd91d9c..2a6dc5e 100644
--- a/libraries/python/assistant-drive/uv.lock
+++ b/libraries/python/assistant-drive/uv.lock
@@ -31,7 +31,6 @@ dependencies = [
     { name = "context" },
     { name = "pydantic" },
     { name = "pydantic-settings" },
-    { name = "python-magic" },
 ]
 
 [package.dev-dependencies]
@@ -48,7 +47,6 @@ requires-dist = [
     { name = "context", editable = "../context" },
     { name = "pydantic", specifier = ">=2.6.1" },
     { name = "pydantic-settings", specifier = ">=2.5.2" },
-    { name = "python-magic", specifier = ">=0.4.27" },
 ]
 
 [package.metadata.requires-dev]
@@ -573,15 +571,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/6a/3e/b68c118422ec867fa7ab88444e1274aa40681c606d59ac27de5a5588f082/python_dotenv-1.0.1-py3-none-any.whl", hash = "sha256:f7b63ef50f1b690dddf550d03497b66d609393b40b564ed0d674909a68ebf16a", size = 19863 },
 ]
 
-[[package]]
-name = "python-magic"
-version = "0.4.27"
-source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/da/db/0b3e28ac047452d079d375ec6798bf76a036a08182dbb39ed38116a49130/python-magic-0.4.27.tar.gz", hash = "sha256:c1ba14b08e4a5f5c31a302b7721239695b2f0f058d125bd5ce1ee36b9d9d3c3b", size = 14677 }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/6c/73/9f872cb81fc5c3bb48f7227872c28975f998f3e7c2b1c16e95e6432bbb90/python_magic-0.4.27-py2.py3-none-any.whl", hash = "sha256:c212960ad306f700aa0d01e5d7a325d20548ff97eb9920dcd29513174f0294d3", size = 13840 },
-]
-
 [[package]]
 name = "pywin32"
 version = "307"