diff --git a/envoy.docs.sphinx_runner/envoy/docs/sphinx_runner/ext/validating_code_block.py b/envoy.docs.sphinx_runner/envoy/docs/sphinx_runner/ext/validating_code_block.py
index 2944ce436..1a80b72fa 100644
--- a/envoy.docs.sphinx_runner/envoy/docs/sphinx_runner/ext/validating_code_block.py
+++ b/envoy.docs.sphinx_runner/envoy/docs/sphinx_runner/ext/validating_code_block.py
@@ -26,8 +26,7 @@ class ValidatingCodeBlock(CodeBlock):
     required_arguments = CodeBlock.required_arguments
     optional_arguments = CodeBlock.optional_arguments
     final_argument_whitespace = CodeBlock.final_argument_whitespace
-    option_spec = {"type-name": directives.unchanged}
-    option_spec.update(CodeBlock.option_spec)
+    CodeBlock.option_spec.update({'type-name': directives.unchanged})
 
     @cached_property
     def configs(self) -> Dict: