diff --git a/build.gradle b/build.gradle
index d61b7876f..67838fbc6 100644
--- a/build.gradle
+++ b/build.gradle
@@ -33,7 +33,7 @@ subprojects {
     sourceCompatibility=1.8
 
     ext {
-        jettyVersion = '9.4.20.v20190813'
+        jettyVersion = '9.4.21.v20190926'
         log4jVersion = '2.12.1'
         slf4jVersion = '1.7.28'
     }