diff --git a/scripts/.npmignore b/scripts/.npmignore
index 95ef7c6b..8be782e5 100644
--- a/scripts/.npmignore
+++ b/scripts/.npmignore
@@ -1 +1,6 @@
 *.orig
+
+/changelog-header.sh
+/publish.sh
+/set-version.sh
+/test.sh
diff --git a/scripts/publish.sh b/scripts/publish.sh
index f71ffe1e..bf9ff38b 100755
--- a/scripts/publish.sh
+++ b/scripts/publish.sh
@@ -78,6 +78,9 @@ confirm "Are you sure you want to publish $VERSION?" || die "Aborted publishing
 # This should fail if this tag already exists.
 git tag "v$VERSION"
 
+# Delete Android build directory so no stale files are accidentally included.
+rm -rf react-native/android/build
+
 # Publish to npm, informing the prepublish script to build Android modules.
 echo "Publishing $VERSION to npm..."
 PRERELEASE=$(grep -Eio '[a-z]+' <<< "$VERSION")
diff --git a/src/.npmignore b/src/.npmignore
index 1d01e3e7..f6ae595a 100644
--- a/src/.npmignore
+++ b/src/.npmignore
@@ -1,7 +1,11 @@
 *.orig
 
-object-store/external/catch
-object-store/external/pegtl/Makefile
-object-store/external/pegtl/examples
-object-store/external/pegtl/unit_tests
-object-store/tests
+/object-store/**/*.cmake
+/object-store/**/*.dylib
+/object-store/**/*.sh
+/object-store/**/CMake*
+/object-store/**/Makefile
+/object-store/external/catch/
+/object-store/external/pegtl/examples/
+/object-store/external/pegtl/unit_tests/
+/object-store/tests/