diff --git a/build.gradle b/build.gradle
index a02b6706f..54d523c02 100644
--- a/build.gradle
+++ b/build.gradle
@@ -134,7 +134,7 @@ dependencies {
 
     // Tests
     testImplementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk8:2.0.21'
-    testImplementation 'com.github.seeseemelk:MockBukkit-v1.20:3.20.2'
+    testImplementation 'com.github.seeseemelk:MockBukkit-v1.21:3.133.0'
     testImplementation('com.googlecode.json-simple:json-simple:1.1.1') {
         exclude group: 'junit', module: 'junit'
     }