diff --git a/cdm-test-utils/src/main/resources/ucar/unidata/util/test/Dockerfile b/cdm-test-utils/src/main/resources/ucar/unidata/util/test/Dockerfile
index 46ceebb57c..adb5b57d94 100644
--- a/cdm-test-utils/src/main/resources/ucar/unidata/util/test/Dockerfile
+++ b/cdm-test-utils/src/main/resources/ucar/unidata/util/test/Dockerfile
@@ -1,4 +1,4 @@
-FROM unidata/tomcat-docker:8.5-jdk11 AS base
+FROM unidata/tomcat-docker:9.0-jdk11 AS base
 
 MAINTAINER Unidata