diff --git a/Android.bp b/Android.bp
index 9629b9a..591362d 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,5 +1,7 @@
 // This file is generated by cargo_embargo.
-// Do not modify this file as changes will be overridden on upgrade.
+// Do not modify this file after the first "rust_*" or "genrule" module
+// because the changes will be overridden on upgrade.
+// Content before the first "rust_*" or "genrule" module is preserved.
 
 package {
     default_applicable_licenses: ["external_rust_crates_url_license"],
@@ -43,7 +45,7 @@
     crate_name: "url",
     cargo_env_compat: true,
     cargo_pkg_version: "2.3.1",
-    srcs: ["src/lib.rs"],
+    crate_root: "src/lib.rs",
     edition: "2018",
     features: ["default"],
     rustlibs: [
@@ -66,7 +68,7 @@
     crate_name: "data",
     cargo_env_compat: true,
     cargo_pkg_version: "2.3.1",
-    srcs: ["tests/data.rs"],
+    crate_root: "tests/data.rs",
     test_suites: ["general-tests"],
     auto_gen_config: true,
     test_options: {
@@ -90,7 +92,7 @@
     crate_name: "unit",
     cargo_env_compat: true,
     cargo_pkg_version: "2.3.1",
-    srcs: ["tests/unit.rs"],
+    crate_root: "tests/unit.rs",
     test_suites: ["general-tests"],
     auto_gen_config: true,
     test_options: {