diff --git a/updater_sample/Android.bp b/updater_sample/Android.bp
index 0d209bbd..845e07b7 100644
--- a/updater_sample/Android.bp
+++ b/updater_sample/Android.bp
@@ -24,11 +24,9 @@ android_app {
     ],
 
     optimize: {
-        // TODO(b/112462307): proguard_flags_files is not picked up by Soong.
-        // proguard_flags_files: [
-        //     "proguard.flags",
-        // ],
-        enabled: false,
+        proguard_flags_files: [
+            "proguard.flags",
+        ],
     },
 
     resource_dirs: ["res"],