diff --git a/Containers/domaincheck/Dockerfile b/Containers/domaincheck/Dockerfile
index b39b7948..a5ea5ca2 100644
--- a/Containers/domaincheck/Dockerfile
+++ b/Containers/domaincheck/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.15.1
+FROM alpine:3.15.3
 RUN apk add --update --no-cache lighttpd bash
 
 RUN adduser -S www-data -G www-data