diff --git a/Dockerfile b/Dockerfile
index 16d51e6..f202c51 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,7 +10,7 @@ ENV JAVA_VERSION=8u162 \
     JAVA_BUNDLE_ID=0da788060d494f5095bf8624735fa2f1 \
 ##tomcat
     TOMCAT_MAJOR=8 \
-    TOMCAT_VERSION=8.5.24 \
+    TOMCAT_VERSION=8.5.27 \
 ##shib-idp
     VERSION=3.3.2 \
 ##TIER