diff --git a/KotlinCore/build.gradle.kts b/KotlinCore/build.gradle.kts
index fbffe43f..c68c5fb5 100644
--- a/KotlinCore/build.gradle.kts
+++ b/KotlinCore/build.gradle.kts
@@ -31,8 +31,7 @@ tasks.shadowJar {
 }
 
 dependencies {
-    compileOnly(libs.paperapi21)
-    compileOnly(libs.nms21)
+    compileOnly(libs.spigotapi)
     compileOnly(project(":SpigotCore"))
 
     implementation(libs.exposedCore)
diff --git a/TNTLeague/build.gradle.kts b/TNTLeague/build.gradle.kts
index 8773671c..79a08492 100644
--- a/TNTLeague/build.gradle.kts
+++ b/TNTLeague/build.gradle.kts
@@ -21,6 +21,15 @@ plugins {
     steamwar.kotlin
 }
 
+kotlin {
+    jvmToolchain(21)
+}
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_21
+    targetCompatibility = JavaVersion.VERSION_21
+}
+
 dependencies {
     compileOnly(libs.paperapi21)
     compileOnly(project(":SpigotCore", "default"))
diff --git a/buildSrc/src/steamwar.kotlin.gradle b/buildSrc/src/steamwar.kotlin.gradle
index f672713d..791ae677 100644
--- a/buildSrc/src/steamwar.kotlin.gradle
+++ b/buildSrc/src/steamwar.kotlin.gradle
@@ -23,12 +23,12 @@ plugins {
 }
 
 kotlin {
-    jvmToolchain(21)
+    jvmToolchain(8)
 }
 
 java {
-    sourceCompatibility = JavaVersion.VERSION_21
-    targetCompatibility = JavaVersion.VERSION_21
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
 }
 
 tasks.compileJava {