diff --git a/coredns/Dockerfile b/coredns/Dockerfile
index f2dba57..b282372 100644
--- a/coredns/Dockerfile
+++ b/coredns/Dockerfile
@@ -7,7 +7,7 @@ ENV GOPATH /go
 RUN	apk --no-cache add \
 	ca-certificates
 
-ENV COREDNS_VERSION v1.1.0
+ENV COREDNS_VERSION v1.1.1
 
 RUN buildDeps=' \
 		go \
diff --git a/powershell/Dockerfile b/powershell/Dockerfile
index fed6c81..c52f325 100644
--- a/powershell/Dockerfile
+++ b/powershell/Dockerfile
@@ -1,7 +1,7 @@
 FROM ubuntu:16.04
 LABEL maintainer "Christian Koep <christiankoep@gmail.com>"
 
-ENV POWERSHELL_VERSION 6.0.2
+ENV POWERSHELL_VERSION v6.1.0-preview.1
 
 RUN apt-get update && apt-get install -y \
 	ca-certificates \