diff --git a/tools/macos-installer/pkgbuild/npm/scripts/postinstall b/tools/macos-installer/pkgbuild/npm/scripts/postinstall
index 285ce81e58a34e..c8562ec68892c4 100755
--- a/tools/macos-installer/pkgbuild/npm/scripts/postinstall
+++ b/tools/macos-installer/pkgbuild/npm/scripts/postinstall
@@ -1,5 +1,6 @@
 #!/bin/sh
 
 cd /usr/local/bin || exit 1
+umask 022
 ln -sf ../lib/node_modules/npm/bin/npm-cli.js npm
 ln -sf ../lib/node_modules/npm/bin/npx-cli.js npx