diff --git a/standalone/gradle.properties b/standalone/gradle.properties
index 369ab03..c18a5aa 100644
--- a/standalone/gradle.properties
+++ b/standalone/gradle.properties
@@ -10,7 +10,7 @@ gradlePluginsVersion=1.42.1
 labkeyClientApiVersion=5.3.0
 
 # used by the LabKey Jsp Gradle plugin for declaring dependencies
-apacheTomcatVersion=9.0.83
+apacheTomcatVersion=9.0.86
 servletApiVersion=4.0.1
 
 # Example external dependency used in build file