diff --git a/test-plugin/build.gradle b/test-plugin/build.gradle
index 7552bc9..c2843f1 100644
--- a/test-plugin/build.gradle
+++ b/test-plugin/build.gradle
@@ -7,10 +7,10 @@ plugins {
 
 group = 'me.tofaa.peentitymeta'
 version = '1.0-SNAPSHOT'
-// java 17
+// java 21
 java {
     toolchain {
-        languageVersion.set(JavaLanguageVersion.of(17))
+        languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
@@ -31,16 +31,16 @@ repositories {
 }
 
 dependencies {
-    compileOnly('org.spigotmc:spigot-api:1.20.1-R0.1-SNAPSHOT')
-    compileOnly('com.github.retrooper.packetevents:spigot:2.3.0')
+    compileOnly('org.spigotmc:spigot-api:1.21-R0.1-SNAPSHOT')
+    compileOnly('com.github.retrooper:packetevents-spigot:' + peVersion)
 //    implementation(project(":platforms:spigot"))
     implementation(project(":platforms:spigot"))
 }
 
 
 runServer {
-    minecraftVersion("1.20.4")
+    minecraftVersion("1.21")
     downloadPlugins {
-        modrinth("packetevents", "6Rjr7zyF")
+        modrinth("packetevents", "MfD5eOYA")
     }
 }
\ No newline at end of file
diff --git a/test-plugin/src/main/resources/plugin.yml b/test-plugin/src/main/resources/plugin.yml
index 8c23a0e..2c7deb1 100644
--- a/test-plugin/src/main/resources/plugin.yml
+++ b/test-plugin/src/main/resources/plugin.yml
@@ -3,7 +3,7 @@ version: 1.0.0
 depend:
   - packetevents
 main: me.tofaa.testentitylib.TestEntityLibPlugin
-api-version: "1.19"
+api-version: "1.21"
 commands:
   testapi:
     description: Test EntityLib API