diff --git a/packages/flutter_tools/gradle/src/main/groovy/flutter.groovy b/packages/flutter_tools/gradle/src/main/groovy/flutter.groovy
index ff5b509896fbe..7c6b483ed4dbf 100644
--- a/packages/flutter_tools/gradle/src/main/groovy/flutter.groovy
+++ b/packages/flutter_tools/gradle/src/main/groovy/flutter.groovy
@@ -308,7 +308,7 @@ class FlutterPlugin implements Plugin<Project> {
                     shrinkResources isBuiltAsApp(project)
                     // Fallback to `android/app/proguard-rules.pro`.
                     // This way, custom Proguard rules can be configured as needed.
-                    proguardFiles project.android.getDefaultProguardFile("proguard-android.txt"), flutterProguardRules, "proguard-rules.pro"
+                    proguardFiles project.android.getDefaultProguardFile("proguard-android-optimize.txt"), flutterProguardRules, "proguard-rules.pro"
                 }
             }
         }