diff --git a/gradle-plugin/plugin/src/main/kotlin/com/emergetools/android/gradle/tasks/size/UploadAPK.kt b/gradle-plugin/plugin/src/main/kotlin/com/emergetools/android/gradle/tasks/size/UploadAPK.kt
index bf8db001..05cf14ac 100644
--- a/gradle-plugin/plugin/src/main/kotlin/com/emergetools/android/gradle/tasks/size/UploadAPK.kt
+++ b/gradle-plugin/plugin/src/main/kotlin/com/emergetools/android/gradle/tasks/size/UploadAPK.kt
@@ -8,6 +8,7 @@ import org.gradle.api.file.DirectoryProperty
 import org.gradle.api.file.RegularFileProperty
 import org.gradle.api.tasks.InputDirectory
 import org.gradle.api.tasks.InputFile
+import org.gradle.api.tasks.Internal
 import org.gradle.api.tasks.Optional
 import org.gradle.api.tasks.PathSensitive
 import org.gradle.api.tasks.PathSensitivity
@@ -27,6 +28,7 @@ abstract class UploadAPK : BaseUploadTask() {
   @get:PathSensitive(PathSensitivity.NAME_ONLY)
   abstract val proguardMapping: RegularFileProperty
 
+  @get:Internal
   protected val primaryArtifact: File
     get() {
       val apks = artifactDir.get().asFileTree.filter { it.extension == APK_EXTENSION }