diff --git a/tools/internal_ci/helper_scripts/prepare_build_macos_rc b/tools/internal_ci/helper_scripts/prepare_build_macos_rc
index 22e80d2afa1d6f8316fa368fc7d6e64593555bf3..a46131a0eddde2cdaebf7c4b50a5fbe5e944d524 100644
--- a/tools/internal_ci/helper_scripts/prepare_build_macos_rc
+++ b/tools/internal_ci/helper_scripts/prepare_build_macos_rc
@@ -15,7 +15,12 @@
 
 # Source this rc script to prepare the environment for macos builds
 
-ulimit -n 1000
+sudo launchctl limit maxfiles unlimited unlimited
+
+# show current maxfiles
+launchctl limit maxfiles
+
+ulimit -n 10000
 
 # show current limits
 ulimit -a