diff --git a/stone-java-gradle-plugin/src/main/kotlin/com/dropbox/stone/java/StoneTask.kt b/stone-java-gradle-plugin/src/main/kotlin/com/dropbox/stone/java/StoneTask.kt
index d90bc1123..e5db8ecea 100644
--- a/stone-java-gradle-plugin/src/main/kotlin/com/dropbox/stone/java/StoneTask.kt
+++ b/stone-java-gradle-plugin/src/main/kotlin/com/dropbox/stone/java/StoneTask.kt
@@ -22,7 +22,7 @@ abstract class StoneTask : DefaultTask() {
     @get:Input
     abstract val stoneConfigs: ListProperty<StoneConfig>
 
-    @get:Internal
+    @get:InputFile
     abstract val generatorFile: RegularFileProperty
 
     @get:Internal