diff --git a/mr/build.gradle b/mr/build.gradle
index 18e7eb641..51d32313b 100644
--- a/mr/build.gradle
+++ b/mr/build.gradle
@@ -69,7 +69,7 @@ dependencies {
 
     testImplementation(project(":test:shared"))
     testImplementation("com.fasterxml.jackson.core:jackson-databind:2.15.2")
-    testImplementation("io.netty:netty-all:4.1.97.Final")
+    testImplementation("io.netty:netty-all:4.1.100.Final")
     testImplementation("org.elasticsearch:securemock:1.2")
 
     itestEmbedded(project(":test:shared"))