diff --git a/config/pkg/ext/builtin-extensions.yml b/config/pkg/ext/builtin-extensions.yml
index 4c6af9f4..de002b93 100644
--- a/config/pkg/ext/builtin-extensions.yml
+++ b/config/pkg/ext/builtin-extensions.yml
@@ -244,6 +244,10 @@ ext-phar:
     - zlib
 ext-posix:
   type: php-extension
+  php-extension:
+    os:
+      - Linux
+      - Darwin
 ext-readline:
   type: php-extension
   depends: