diff --git a/multi_user/__init__.py b/multi_user/__init__.py
index 6cd801c..42acb53 100644
--- a/multi_user/__init__.py
+++ b/multi_user/__init__.py
@@ -44,7 +44,7 @@ from . import environment
 
 
 DEPENDENCIES = {
-    ("replication", '0.0.21a20'),
+    ("replication", '0.0.21a21'),
 }
 
 
diff --git a/scripts/docker_server/Dockerfile b/scripts/docker_server/Dockerfile
index 772453d..9973833 100644
--- a/scripts/docker_server/Dockerfile
+++ b/scripts/docker_server/Dockerfile
@@ -1,7 +1,7 @@
 # Download base image debian jessie
 FROM python:slim
 
-ARG replication_version=0.0.21a19
+ARG replication_version=0.0.21a21
 ARG version=0.1.1
 
 # Infos