Upgrade tomcat
diff --git a/examples/pom.xml b/examples/pom.xml
index e2eb016..9652c0a 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -206,7 +206,7 @@
         <spring-security-version>5.3.0.RELEASE</spring-security-version>
         <surefire.version>${maven-surefire-plugin-version}</surefire.version>
         <tinybundles-version>2.1.1</tinybundles-version>
-        <tomcat-version>9.0.31</tomcat-version>
+        <tomcat-version>9.0.36</tomcat-version>
         <woodstox-version>6.0.3</woodstox-version>
         <xmlunit-version>1.6</xmlunit-version>
         <derby-version>10.14.2.0</derby-version>