diff --git a/build.gradle.kts b/build.gradle.kts
index b64f5b6..da0f20f 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -2,7 +2,7 @@ import org.ajoberstar.grgit.Grgit
 import java.util.*
 
 plugins {
-    kotlin("jvm") version "1.8.20"
+    kotlin("jvm") version "1.8.21"
     id("org.ajoberstar.grgit") version "5.2.0"
     `java-library`
     `maven-publish`
diff --git a/bukkit-extension/build.gradle.kts b/bukkit-extension/build.gradle.kts
index a4d064d..5df38fc 100644
--- a/bukkit-extension/build.gradle.kts
+++ b/bukkit-extension/build.gradle.kts
@@ -2,7 +2,7 @@ import org.ajoberstar.grgit.Grgit
 import java.util.*
 
 plugins {
-    kotlin("jvm") version "1.8.20"
+    kotlin("jvm") version "1.8.21"
     `java-library`
     `maven-publish`
     signing