diff --git a/gradle.properties b/gradle.properties
index fda3f253..65409c84 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -20,4 +20,4 @@ jacocoVersion    = 0.8.2
 jbakeVersion     = 2.6.2
 semverVersion    = 0.9.0
 spockVersion     = 1.1-groovy-2.4
-jettyVersion     = 9.2.24.v20180105
+jettyVersion     = 9.4.12.v20180830
diff --git a/src/main/groovy/org/jbake/gradle/JBakeExtension.groovy b/src/main/groovy/org/jbake/gradle/JBakeExtension.groovy
index 2ccc90af..731910f8 100644
--- a/src/main/groovy/org/jbake/gradle/JBakeExtension.groovy
+++ b/src/main/groovy/org/jbake/gradle/JBakeExtension.groovy
@@ -28,7 +28,7 @@ class JBakeExtension {
     String groovyTemplatesVersion = '2.5.2'
     String jade4jVersion = '1.2.7'
     String thymeleafVersion = '3.0.9.RELEASE'
-    String jettyVersion = '9.2.24.v20180105'
+    String jettyVersion = '9.4.12.v20180830'
     String srcDirName = 'src/jbake'
     String destDirName = 'jbake'
     String template = 'groovy'