diff --git a/build.gradle b/build.gradle
index b8940f0..9bd202b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -55,11 +55,11 @@ repositories {
 }
 
 dependencies {
-    compileOnly 'io.papermc.paper:paper-api:1.20.5-R0.1-SNAPSHOT'
+    compileOnly 'io.papermc.paper:paper-api:1.21-R0.1-SNAPSHOT'
     compileOnly 'com.github.spotbugs:spotbugs-annotations:4.8.3'
     implementation 'io.papermc:paperlib:1.0.8'
     antlr "org.antlr:antlr4:4.7" // use ANTLR version 4
-    testImplementation 'io.papermc.paper:paper-api:1.20.5-R0.1-SNAPSHOT'
+    testImplementation 'io.papermc.paper:paper-api:1.21-R0.1-SNAPSHOT'
     testImplementation 'org.junit.jupiter:junit-jupiter:5.10.2'
     testRuntimeOnly 'org.junit.platform:junit-platform-launcher:1.10.2'
 }