diff --git a/README.md b/README.md
index fb77979c6..73b352049 100644
--- a/README.md
+++ b/README.md
@@ -944,6 +944,7 @@ Below is the complete list of available options that can be used to customize yo
 - **AWS_BACKUP_ACCESS_KEY_ID**: AWS access key id. No defaults.
 - **AWS_BACKUP_SECRET_ACCESS_KEY**: AWS secret access key. No defaults.
 - **AWS_BACKUP_BUCKET**: AWS bucket for backup uploads. No defaults.
+- **AWS_BACKUP_MULTIPART_CHUNK_SIZE**: Enables mulitpart uploads when file size reaches a defined size. See at [AWS S3 Docs](http://docs.aws.amazon.com/AmazonS3/latest/dev/uploadobjusingmpu.html)
 - **GITLAB_ROBOTS_PATH**: Location of custom `robots.txt`. Uses GitLab's default `robots.txt` configuration by default. See [www.robotstxt.org](http://www.robotstxt.org) for examples.
 - **RACK_ATTACK_ENABLED**: Enable/disable rack middleware for blocking & throttling abusive requests Defaults to `true`.
 - **RACK_ATTACK_WHITELIST**: Always allow requests from whitelisted host. Defaults to `127.0.0.1`
diff --git a/assets/runtime/env-defaults b/assets/runtime/env-defaults
index 9d0112a3b..f7abe7fed 100644
--- a/assets/runtime/env-defaults
+++ b/assets/runtime/env-defaults
@@ -137,6 +137,7 @@ AWS_BACKUP_REGION=${AWS_BACKUP_REGION}
 AWS_BACKUP_ACCESS_KEY_ID=${AWS_BACKUP_ACCESS_KEY_ID}
 AWS_BACKUP_SECRET_ACCESS_KEY=${AWS_BACKUP_SECRET_ACCESS_KEY}
 AWS_BACKUP_BUCKET=${AWS_BACKUP_BUCKET}
+AWS_BACKUP_MULTIPART_CHUNK_SIZE=${AWS_BACKUP_MULTIPART_CHUNK_SIZE}
 
 ## NGINX
 NGINX_WORKERS=${NGINX_WORKERS:-1}
diff --git a/assets/runtime/functions b/assets/runtime/functions
index d0a41b363..1674fa626 100644
--- a/assets/runtime/functions
+++ b/assets/runtime/functions
@@ -702,7 +702,8 @@ gitlab_configure_backups_aws() {
         AWS_BACKUP_REGION \
         AWS_BACKUP_ACCESS_KEY_ID \
         AWS_BACKUP_SECRET_ACCESS_KEY \
-        AWS_BACKUP_BUCKET
+        AWS_BACKUP_BUCKET \
+        AWS_BACKUP_MULTIPART_CHUNK_SIZE
       ;;
     *)
       exec_as_git sed -i "/upload:/,/remote_directory:/d" ${GITLAB_CONFIG}