diff --git a/Dockerfile b/Dockerfile
index e6672e5..7fff9b5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,17 +3,17 @@ FROM mcr.microsoft.com/windows/servercore:ltsc2016
 #settings
 ENV JAVA_OPTS='-Xmx3000m'
 ENV TOMCAT_MAJOR_VERSION=9
-ENV TOMCAT_VERSION=9.0.29
+ENV TOMCAT_VERSION=9.0.30
 ENV CATALINA_HOME=c:\\Tomcat
 ENV IDP_VERSION=3.4.6
-ENV TIERVERSION=20191206
+ENV TIERVERSION=20200109
 
 ### JAVA ###
 #
 ##below are settings for Corretto Java 
 ENV JAVA_HOME='C:\Program Files\Amazon Corretto\jdk1.8.0_232'
-ENV CORRETTO_VERSION='8.232.09.1'
-ENV CORRETTO_FILE_VERSION='8.232.09.1'
+ENV CORRETTO_URL_PERM='https://corretto.aws/downloads/latest/amazon-corretto-8-x64-windows-jdk.msi'
+ENV CORRETTO_INSTALL_FILE='amazon-corretto-8-x64-windows-jdk.msi'
 
 ##below is for Zulu Java
 #ENV JAVA_HOME='c:\zulujava\zulu-8\'
@@ -28,11 +28,11 @@ RUN powershell [Environment]::SetEnvironmentVariable('JAVA_HOME', '%JAVA_HOME%',
 ENV SHIB_INSTALL_FILE=C:\\shibboleth-identity-provider-$IDP_VERSION-x64.msi
 
 ###install Corretto Java 
-RUN powershell (new-object System.Net.WebClient).Downloadfile('https://d3pxv6yz143wms.cloudfront.net/%CORRETTO_VERSION%/amazon-corretto-%CORRETTO_FILE_VERSION%-windows-x64.msi', 'C:\corretto-java-%CORRETTO_VERSION%')
-RUN powershell If ((Get-FileHash C:\corretto-java-%CORRETTO_VERSION% -Algorithm MD5).Hash.ToLower() -eq '620ee139aac5f05ab404006b5e33378f')  { ` \
-		start-process -filepath c:\windows\system32\msiexec.exe -passthru -wait -argumentlist '/i','C:\corretto-java-%CORRETTO_VERSION%','/qn' ` \
-       } Else { throw 'bad hash comparison on Zulu Java download' }
-RUN del C:\corretto-java-%CORRETTO_VERSION%
+RUN powershell (new-object System.Net.WebClient).Downloadfile('%CORRETTO_URL_PERM%', 'C:\%CORRETTO_INSTALL_FILE%')
+RUN powershell If ((Get-FileHash C:\%CORRETTO_INSTALL_FILE% -Algorithm MD5).Hash.ToLower() -eq '620ee139aac5f05ab404006b5e33378f')  { ` \
+		start-process -filepath c:\windows\system32\msiexec.exe -passthru -wait -argumentlist '/i','C:\%CORRETTO_INSTALL_FILE%','/qn' ` \
+       } Else { throw 'bad hash comparison on Corretto Java download' }
+RUN del C:\%CORRETTO_INSTALL_FILE%
 
 ###install Zulu Java
 #RUN powershell (new-object System.Net.WebClient).Downloadfile('https://cdn.azul.com/zulu/bin/%JAVA_INSTALL_FILENAME%', 'C:\%JAVA_INSTALL_FILENAME%')
@@ -68,7 +68,7 @@ RUN del C:\corretto-java-%CORRETTO_VERSION%
 COPY container_files/config.ini c:\\config.ini
 RUN powershell (new-object System.Net.WebClient).Downloadfile('http://www.apache.org/dist/tomcat/tomcat-%TOMCAT_MAJOR_VERSION%/v%TOMCAT_VERSION%/bin/apache-tomcat-%TOMCAT_VERSION%.exe', 'C:\apache-tomcat-%TOMCAT_VERSION%.exe')
 RUN powershell If ((Get-FileHash C:\apache-tomcat-%TOMCAT_VERSION%.exe -Algorithm SHA512).Hash.ToLower() -eq ` \
- '58b85ab414cd5c9fda01b26dea378983834d6fa15702e6d1cddb85a40d537f46cafae51e15a33e7a618456178146cc6a1136f7b83369a1651f7bef393c4ce011') ` \
+ '07356fd3c8e57437f5b6e1afc3cc7ea6d62f7855095b5c99dfda54b86298a5fa078d29bda3e939b87a89e4565b8a68d01590da18051ea76bb472e5dc8034f653') ` \
  { ` \
         start-process -filepath C:\apache-tomcat-%TOMCAT_VERSION%.exe -passthru -wait -argumentlist '/S','/C=c:\config.ini','/D=c:\Tomcat' ` \
       } Else { throw 'bad hash comparison on Tomcat download' }
diff --git a/test-compose/idp/Dockerfile b/test-compose/idp/Dockerfile
index c27cfe1..0f75d6b 100644
--- a/test-compose/idp/Dockerfile
+++ b/test-compose/idp/Dockerfile
@@ -1,4 +1,4 @@
-FROM tier/shib-idp-windows:latest
+FROM tier/shib-idp-windows:20200109_3.4.6
 
 #params for supplying your IdP config to your container (can be overridden at build-time using build-args)
 ARG TOMCFG=config\\tomcat