diff --git a/build.gradle b/build.gradle
index 95e10b793..62cf0766b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -13,7 +13,7 @@ ext {
     // dependency versions
     junitVersion = '5.3.0-M1'
     log4jVersion = '2.11.0'
-    nettyVersion = '4.1.27.Final'
+    nettyVersion = '4.1.28.Final'
 }
 
 repositories {