diff --git a/build.gradle.kts b/build.gradle.kts
index adb809c..513d9e8 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -16,11 +16,11 @@ base.archivesName = "breakme"
 
 // https://fabricmc.net/develop/
 jfMod {
-    minecraftVersion = "1.20.5"
+    minecraftVersion = "1.21"
     yarn("build.1")
-    loaderVersion = "0.15.10"
-    libJfVersion = "3.15.5"
-    fabricApiVersion = "0.97.6+1.20.5"
+    loaderVersion = "0.15.11"
+    libJfVersion = "3.16.0"
+    fabricApiVersion = "0.100.1+1.21"
 
     modrinth {
         projectId = "breakme"
@@ -43,7 +43,7 @@ dependencies {
     modLocalRuntime("io.gitlab.jfronny.libjf:libjf-devutil")
     modLocalRuntime("io.gitlab.jfronny.libjf:libjf-config-ui-tiny")
     modLocalRuntime("net.fabricmc.fabric-api:fabric-api")
-    modLocalRuntime("com.terraformersmc:modmenu:10.0.0-beta.1")
+    modLocalRuntime("com.terraformersmc:modmenu:11.0.0-beta.1")
 }
 
 loom {
@@ -52,7 +52,7 @@ loom {
     }
 }
 
-fun list(`package`: String) = Files.list(projectDir.resolve("src/main/java").resolve(`package`.replace('.', '/')).toPath()).use { stream ->
+fun list(`package`: String): List<ClassName> = Files.list(projectDir.resolve("src/main/java").resolve(`package`.replace('.', '/')).toPath()).use { stream ->
     stream
         .map { it.fileName.toString() }
         .map { it.substring(0, it.lastIndexOf('.')) }