diff --git a/.env.example b/.env.example
index a6cb2f9a6..70158ddc2 100644
--- a/.env.example
+++ b/.env.example
@@ -78,3 +78,6 @@ FILESYSTEM_CLOUD=s3
 #AWS_URL=
 #AWS_ENDPOINT=
 #AWS_USE_PATH_STYLE_ENDPOINT=false
+## Optional (WHEN_SUPPORTED (default) / WHEN_REQUIRED) https://docs.aws.amazon.com/sdkref/latest/guide/feature-dataintegrity.html
+# AWS_REQUEST_CHECKSUM_CALCULATION=WHEN_SUPPORTED
+# AWS_RESPONSE_CHECKSUM_VALIDATION=WHEN_SUPPORTED