diff --git a/README.md b/README.md
index 335245e..52b728f 100644
--- a/README.md
+++ b/README.md
@@ -27,3 +27,10 @@ parameters:
   bootstrapFiles:
     - vendor/wpsyntex/polylang-stubs/polylang-stubs.php
 ```
+
+Opt-in for WordPress stubs override.
+
+```yaml
+  stubFiles:
+    - vendor/wpsyntex/polylang-phpstan/stubs/wordpress-override.php
+```
diff --git a/stubs/wordpress-override.php b/stubs/wordpress-override.php
new file mode 100644
index 0000000..b9ebcf6
--- /dev/null
+++ b/stubs/wordpress-override.php
@@ -0,0 +1,24 @@
+<?php
+/**
+ * Accepts anything and returns a string.
+ *
+ * @param mixed $key
+ * @return string
+ */
+function sanitize_key( $key ) {}
+
+/**
+ * Accepts only objects, arrays and strings and always returns a scalar.
+ *
+ * @param string|array<mixed>|object $data
+ * @return scalar
+ */
+function maybe_serialize( $data ) {}
+
+/**
+ * Accepts anything and returns a string. @see {_sanitize_text_field()}.
+ *
+ * @param mixed $str
+ * @return string
+ */
+function sanitize_text_field( $str ) {}