diff --git a/play-services-core/src/main/AndroidManifest.xml b/play-services-core/src/main/AndroidManifest.xml
index 6a0922e4..01d3af5f 100644
--- a/play-services-core/src/main/AndroidManifest.xml
+++ b/play-services-core/src/main/AndroidManifest.xml
@@ -29,7 +29,7 @@
+ android:protectionLevel="signature"/>