diff --git a/packages/react-native/ReactAndroid/.npmignore b/packages/react-native/ReactAndroid/.npmignore
index 664f6e667e442f..4f9cc308e91286 100644
--- a/packages/react-native/ReactAndroid/.npmignore
+++ b/packages/react-native/ReactAndroid/.npmignore
@@ -1,7 +1,7 @@
 # Make sure we never publish ReactAndroid/build (Gradle output)
 # or ReactAndroid/.cxx (CMake output) to npm.
 # Those folders are huge (> 100MB)!
-build/
+/build/
 .cxx/
 # Exclude buck config/jars for third-party libraries
 src/main/third-party/