diff --git a/acceptance-tests/build.gradle.kts b/acceptance-tests/build.gradle.kts
index 16ea7fb8..2d67312c 100644
--- a/acceptance-tests/build.gradle.kts
+++ b/acceptance-tests/build.gradle.kts
@@ -35,7 +35,7 @@ dependencies {
 
     implementation("org.jenkins-ci:acceptance-test-harness:5740.vd30f30408987")
 
-    testImplementation(platform("io.netty:netty-bom:4.1.100.Final"))
+    testImplementation(platform("io.netty:netty-bom:4.1.101.Final"))
     testImplementation("io.ratpack:ratpack-test:2.0.0-rc-1")
 
     add(gradlePlugin.name, project(path = ":", configuration = "gradlePluginJpi"))