diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index a4386da7..22d22884 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -7,7 +7,7 @@ micronaut-test = "4.0.0"
 groovy = "4.0.12"
 spock = '2.3-groovy-4.0'
 testcontainers = "1.19.1"
-netty-http3 = "0.0.19.Final"
+netty-http3 = "0.0.21.Final"
 
 managed-acme4j = "2.16"
 micronaut-serde = "2.1.1"