diff --git a/phpstan.neon.dist b/phpstan.neon.dist
index 8168aa3..1fee9bf 100644
--- a/phpstan.neon.dist
+++ b/phpstan.neon.dist
@@ -9,3 +9,15 @@ parameters:
     - vendor/php-stubs/wordpress-stubs/wordpress-stubs.php
     - vendor/wp-cli/mustangostang-spyc/src/Spyc.php
   treatPhpDocTypesAsCertain: false
+  ignoreErrors:
+    # johnbillion/wp-compat checks every WordPress symbol against the WordPress 4.9
+    # baseline that wp-cli-tests configures, and reports anything newer.
+
+    # WordPress 5.3 only formalized the already documented `...$arg` parameter of
+    # `do_action()` by adding it to the function signature. Additional arguments were
+    # collected through `func_get_args()` before that, so passing the server instance to
+    # `rest_api_init` has always worked. The identifier already names one specific
+    # parameter of one specific function.
+    -
+      identifier: WPCompat.parameterNotAvailable.doaction.arg
+      path: inc/Runner.php