diff --git a/build.gradle b/build.gradle
index dcca38f6..42367cb3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -56,7 +56,7 @@ dependencies {
     implementation 'com.github.natanbc:lavadsp:0.5.2'
     implementation 'com.typesafe:config:1.4.0'
     implementation 'com.google.code.gson:gson:2.8.6'
-    implementation 'io.undertow:undertow-core:2.2.0.Final'
+    implementation 'io.undertow:undertow-core:2.3.3.Final'
     implementation 'com.google.guava:guava:23.0'
     implementation 'com.sparkjava:spark-core:2.9.2'
     implementation 'com.h2database:h2:1.4.200'