diff --git a/Source/Plugins/Core/com.equella.core/src/com/tle/tomcat/service/impl/TomcatServiceImpl.java b/Source/Plugins/Core/com.equella.core/src/com/tle/tomcat/service/impl/TomcatServiceImpl.java
index c352d1ad0b..8600da4ff2 100644
--- a/Source/Plugins/Core/com.equella.core/src/com/tle/tomcat/service/impl/TomcatServiceImpl.java
+++ b/Source/Plugins/Core/com.equella.core/src/com/tle/tomcat/service/impl/TomcatServiceImpl.java
@@ -182,6 +182,7 @@ public void startup() {
       if (ajpPort != -1) {
         Connector connector = new Connector(useBio ? BIO_AJP : "AJP/1.3");
         connector.setPort(ajpPort);
+        connector.setAttribute("requiredSecret", false);
         connector.setAttribute("tomcatAuthentication", false);
         connector.setAttribute("packetSize", "65536");
         setConnector(connector);
diff --git a/Source/Server/equellaserver/build.sbt b/Source/Server/equellaserver/build.sbt
index 8a16376f2c..f042f7dc63 100644
--- a/Source/Server/equellaserver/build.sbt
+++ b/Source/Server/equellaserver/build.sbt
@@ -17,7 +17,7 @@ unmanagedClasspath in Runtime += (baseDirectory in LocalProject("learningedge_co
 
 val jacksonVersion   = "2.10.2"
 val axis2Version     = "1.6.2"
-val TomcatVersion    = "8.5.50"
+val TomcatVersion    = "8.5.51"
 val SwaggerVersion   = "1.5.24"
 val RestEasyVersion  = "3.5.0.Final"
 val simpledbaVersion = "0.1.9"