diff --git a/CHANGELOG.md b/CHANGELOG.md
index 431e3a9c..a0bbfb55 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.9.37] - 2023-01-10
+### Updated
+- File download: return last_modified
+
 ## [1.9.36] - 2023-01-09
 ### Updated
 - dependencies
diff --git a/README.md b/README.md
index aeb1b281..45534aac 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# OctoBot-Commons [1.9.36](https://github.com/Drakkar-Software/OctoBot-Commons/blob/master/CHANGELOG.md)
+# OctoBot-Commons [1.9.37](https://github.com/Drakkar-Software/OctoBot-Commons/blob/master/CHANGELOG.md)
 [![Codacy Badge](https://api.codacy.com/project/badge/Grade/b31f3ab3511744a5a5ca6b9bb48e77bb)](https://app.codacy.com/gh/Drakkar-Software/OctoBot-Commons?utm_source=github.com&utm_medium=referral&utm_content=Drakkar-Software/OctoBot-Commons&utm_campaign=Badge_Grade_Dashboard)
 [![PyPI](https://img.shields.io/pypi/v/OctoBot-Commons.svg)](https://pypi.python.org/pypi/OctoBot-Commons/)
 [![Coverage Status](https://coveralls.io/repos/github/Drakkar-Software/OctoBot-Commons/badge.svg?branch=master)](https://coveralls.io/github/Drakkar-Software/OctoBot-Commons?branch=master)
diff --git a/octobot_commons/__init__.py b/octobot_commons/__init__.py
index e2c2e11c..2334973f 100644
--- a/octobot_commons/__init__.py
+++ b/octobot_commons/__init__.py
@@ -16,7 +16,7 @@
 #  License along with this library.
 
 PROJECT_NAME = "OctoBot-Commons"
-VERSION = "1.9.36"  # major.minor.revision
+VERSION = "1.9.37"  # major.minor.revision
 
 MARKET_SEPARATOR = "/"
 SETTLEMENT_ASSET_SEPARATOR = ":"
diff --git a/octobot_commons/aiohttp_util.py b/octobot_commons/aiohttp_util.py
index 1eca1dd3..fdf08a83 100644
--- a/octobot_commons/aiohttp_util.py
+++ b/octobot_commons/aiohttp_util.py
@@ -21,7 +21,7 @@ async def download_stream_file(
     aiohttp_session,
     data_chunk_size=5 * 2**20,
     is_aiofiles_output_file=False,
-):
+) -> str:
     """
     Download a big file with an aiohttp session
     :param output_file: the output file
@@ -29,13 +29,16 @@ async def download_stream_file(
     :param aiohttp_session: the aiohttp session
     :param data_chunk_size: default value is 5*2**20 (5MB)
     :param is_aiofiles_output_file: When True, output_file.write will be awaited (when it's an aiofiles instance)
+    :return downloaded file last_modified if given as response header
     """
+    last_modified = None
     async with aiohttp_session.get(file_url) as resp:
         if resp.status != 200:
             raise RuntimeError(
                 f"Failed to download file at url : {file_url} (status: {resp.status})"
             )
         while True:
+            last_modified = resp.headers.get("Last-Modified", "unknown")
             chunk = await resp.content.read(data_chunk_size)
             if not chunk:
                 # resp.content.read returns an empty chunk when completed
@@ -44,3 +47,4 @@ async def download_stream_file(
                 await output_file.write(chunk)
             else:
                 output_file.write(chunk)
+    return last_modified