diff --git a/java/dex.go b/java/dex.go
index a44d792..2b78703 100644
--- a/java/dex.go
+++ b/java/dex.go
@@ -200,6 +200,16 @@
 			"--verbose")
 	}
 
+	// Supplying the platform build flag disables various features like API modeling and desugaring.
+	// For targets with a stable min SDK version (i.e., when the min SDK is both explicitly specified
+	// and managed+versioned), we suppress this flag to ensure portability.
+	// Note: Targets with a min SDK kind of core_platform (e.g., framework.jar) or unspecified (e.g.,
+	// services.jar), are not classified as stable, which is WAI.
+	// TODO(b/232073181): Expand to additional min SDK cases after validation.
+	if !minSdkVersion.Stable() {
+		flags = append(flags, "--android-platform-build")
+	}
+
 	effectiveVersion, err := minSdkVersion.EffectiveVersion(ctx)
 	if err != nil {
 		ctx.PropertyErrorf("min_sdk_version", "%s", err)