diff --git a/Android.bp b/Android.bp
index 169fd1c..4339cae 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,4 +1,5 @@
-// This file is generated by cargo2android.py --run --dependencies --device --tests --patch=patches/Android.bp.patch.
+// This file is generated by cargo2android.py --config cargo2android.json.
+// Do not modify this file as changes will be overridden on upgrade.
 
 package {
     default_applicable_licenses: ["external_rust_crates_bitflags_license"],
@@ -45,14 +46,15 @@
     auto_gen_config: true,
     edition: "2015",
     features: ["default"],
-    flags: [
-        "--cfg bitflags_const_fn",
-    ],
+    cfgs: ["bitflags_const_fn"],
 }
 
 rust_test_host {
     name: "bitflags_host_test_src_lib",
     defaults: ["bitflags_defaults"],
+    test_options: {
+        unit_test: true,
+    },
 }
 
 rust_test {
@@ -68,9 +70,7 @@
     srcs: ["src/lib.rs"],
     edition: "2015",
     features: ["default"],
-    flags: [
-        "--cfg bitflags_const_fn",
-    ],
+    cfgs: ["bitflags_const_fn"],
     apex_available: [
         "//apex_available:platform",
         "com.android.virt",
diff --git a/cargo2android.json b/cargo2android.json
new file mode 100644
index 0000000..ac56e26
--- /dev/null
+++ b/cargo2android.json
@@ -0,0 +1,10 @@
+{
+  "apex-available": [
+    "//apex_available:platform",
+    "com.android.virt"
+  ],
+  "dependencies": true,
+  "device": true,
+  "run": true,
+  "tests": true
+}
\ No newline at end of file
diff --git a/patches/Android.bp.patch b/patches/Android.bp.patch
deleted file mode 100644
index 580673c..0000000
--- a/patches/Android.bp.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-diff --git a/Android.bp b/Android.bp
-index 30e65f1..3234f17 100644
---- a/Android.bp
-+++ b/Android.bp
-@@ -39,4 +39,8 @@ rust_library {
-     flags: [
-         "--cfg bitflags_const_fn",
-     ],
-+    apex_available: [
-+        "//apex_available:platform",
-+        "com.android.virt",
-+    ],
- }