diff --git a/obstore/python/obstore/_store/_aws.pyi b/obstore/python/obstore/_store/_aws.pyi
index 365b6d00..948aa613 100644
--- a/obstore/python/obstore/_store/_aws.pyi
+++ b/obstore/python/obstore/_store/_aws.pyi
@@ -92,6 +92,16 @@ class S3Config(TypedDict, total=False):
 
     **Environment variable**: `AWS_ACCESS_KEY_ID`.
     """
+    aws_endpoint_url_s3: str
+    """The service-specific endpoint for communicating with AWS S3.
+
+    This takes precedence over `endpoint` when both are set.
+
+    By default, only HTTPS schemes are enabled. To connect to an HTTP endpoint, enable
+    `allow_http` in the client options.
+
+    **Environment variable**: `AWS_ENDPOINT_URL_S3`.
+    """
 
     bucket: str
     """Bucket name (required).
@@ -242,8 +252,7 @@ class S3Config(TypedDict, total=False):
     **Environment variables**:
 
     - `AWS_ENDPOINT`
-    - `AWS_ENDPOINT_URL`
-    - `AWS_ENDPOINT_URL_S3`.
+    - `AWS_ENDPOINT_URL`.
     """
 
     imdsv1_fallback: bool