diff --git a/libs/WindowManager/Shell/Android.bp b/libs/WindowManager/Shell/Android.bp
index cdff585..9d625c0 100644
--- a/libs/WindowManager/Shell/Android.bp
+++ b/libs/WindowManager/Shell/Android.bp
@@ -138,6 +138,11 @@
         "dagger2",
         "jsr330",
     ],
+    libs: [
+        // Soong fails to automatically add this dependency because all the
+        // *.kt sources are inside a filegroup.
+        "kotlin-annotations",
+    ],
     kotlincflags: ["-Xjvm-default=enable"],
     manifest: "AndroidManifest.xml",
     plugins: ["dagger2-compiler"],