diff --git a/Containers/mastercontainer/Dockerfile b/Containers/mastercontainer/Dockerfile
index 0678a7ca..cb0554d7 100644
--- a/Containers/mastercontainer/Dockerfile
+++ b/Containers/mastercontainer/Dockerfile
@@ -1,5 +1,5 @@
 # Docker CLI is a requirement
-FROM docker:20.10.20-dind-alpine3.16 as dind
+FROM docker:20.10.21-dind-alpine3.16 as dind
 
 # Caddy is a requirement
 FROM caddy:2.6.2-alpine as caddy