From f89fcea1e20335943cf3f806ba2c5db5978fcfdb Mon Sep 17 00:00:00 2001
From: Kevin Chung <kchung@ctfd.io>
Date: Thu, 13 Jan 2022 14:27:33 -0500
Subject: [PATCH] Fix boto3 s3 signature (#2041)

---
 CTFd/utils/uploads/uploaders.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CTFd/utils/uploads/uploaders.py b/CTFd/utils/uploads/uploaders.py
index a70bda36..feb72623 100644
--- a/CTFd/utils/uploads/uploaders.py
+++ b/CTFd/utils/uploads/uploaders.py
@@ -87,7 +87,7 @@ class S3Uploader(BaseUploader):
         endpoint = get_app_config("AWS_S3_ENDPOINT_URL")
         client = boto3.client(
             "s3",
-            config=Config(signature_version="v4"),
+            config=Config(signature_version="s3v4"),
             aws_access_key_id=access_key,
             aws_secret_access_key=secret_key,
             endpoint_url=endpoint,