diff --git a/nanoserver-sac2016/Dockerfile b/nanoserver-sac2016/Dockerfile
index f634888..4a72011 100644
--- a/nanoserver-sac2016/Dockerfile
+++ b/nanoserver-sac2016/Dockerfile
@@ -1,4 +1,4 @@
-FROM microsoft/nanoserver:10.0.14393.1944
+FROM microsoft/nanoserver:sac2016
 
 ADD https://az880830.vo.msecnd.net/nanoserver-ga-2016/Microsoft-NanoServer-IIS-Package_base_10-0-14393-0.cab /install/Microsoft-NanoServer-IIS-Package_base_10-0-14393-0.cab
 ADD https://az880830.vo.msecnd.net/nanoserver-ga-2016/Microsoft-NanoServer-IIS-Package_English_10-0-14393-0.cab /install/Microsoft-NanoServer-IIS-Package_English_10-0-14393-0.cab
diff --git a/windowsservercore-1709/Dockerfile b/windowsservercore-1709/Dockerfile
index a77a634..1227201 100644
--- a/windowsservercore-1709/Dockerfile
+++ b/windowsservercore-1709/Dockerfile
@@ -1,4 +1,4 @@
-FROM microsoft/windowsservercore:1709_KB4054517
+FROM microsoft/windowsservercore:1709
 
 RUN powershell -Command Add-WindowsFeature Web-Server
 
diff --git a/windowsservercore-ltsc2016/Dockerfile b/windowsservercore-ltsc2016/Dockerfile
index 3866c80..bc768db 100644
--- a/windowsservercore-ltsc2016/Dockerfile
+++ b/windowsservercore-ltsc2016/Dockerfile
@@ -1,4 +1,4 @@
-FROM microsoft/windowsservercore:10.0.14393.1944
+FROM microsoft/windowsservercore:ltsc2016
 
 RUN powershell -Command Add-WindowsFeature Web-Server