diff --git a/build.gradle.kts b/build.gradle.kts
index e135150..c7495d2 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -47,7 +47,7 @@ dependencies {
     implementation("commons-validator:commons-validator:1.10.1")
 
     // Force transient dependencies to use a newer version to avoid vulnerabilities in ktor-server-netty
-    implementation("io.netty:netty-codec:4.2.8.Final")
+    implementation("io.netty:netty-codec:4.2.9.Final")
 
     testImplementation(kotlin("test"))
 }