diff --git a/build.gradle b/build.gradle
index 053c1ca..73883aa 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,7 @@
 plugins {
     id("org.jetbrains.kotlin.jvm") version "1.8.10"
     id("org.jetbrains.kotlin.kapt") version "1.6.10"
-    id("org.jetbrains.kotlin.plugin.allopen") version "1.6.10"
+    id("org.jetbrains.kotlin.plugin.allopen") version "1.8.21"
     id("io.micronaut.application") version "1.5.0"
     id("com.github.johnrengelman.shadow") version "7.1.2"
 }