diff --git a/tools/gradle-plugin/src/BuildMiraiPluginTask.kt b/tools/gradle-plugin/src/BuildMiraiPluginTask.kt
index f316b56ef..53227973f 100644
--- a/tools/gradle-plugin/src/BuildMiraiPluginTask.kt
+++ b/tools/gradle-plugin/src/BuildMiraiPluginTask.kt
@@ -2,17 +2,24 @@ package net.mamoe.mirai.console.gradle
 
 import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
 import org.gradle.api.tasks.CacheableTask
+import org.gradle.api.tasks.Internal
+import org.gradle.api.tasks.OutputFile
 import org.jetbrains.kotlin.gradle.plugin.KotlinTarget
 import java.io.File
 
 @CacheableTask
 public open class BuildMiraiPluginTask : ShadowJar() {
-    internal var targetField: KotlinTarget? = null
+    @Internal
+    public var targetField: KotlinTarget? = null
 
-    public val target: KotlinTarget get() = targetField!!
+    @get:Internal
+    public val target: KotlinTarget
+        get() = targetField!!
 
     /**
      * ShadowJar 打包结果
      */
-    public val output: File get() = outputs.files.singleFile
+    @get:OutputFile
+    public val output: File
+        get() = outputs.files.singleFile
 }
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