diff --git a/src/doc/reference/opencilk-language-specification.md b/src/doc/reference/opencilk-language-specification.md
index 106a70fc..60f478eb 100644
--- a/src/doc/reference/opencilk-language-specification.md
+++ b/src/doc/reference/opencilk-language-specification.md
@@ -10,6 +10,7 @@ tags:
   - Grammar
 eleventyNavigation:
   key: Language specification
+attribution: true
 ---
 <h1 class="title">OpenCilk Language Extension Specification<br />
     Version 1.0 (2021-02-01) </h1>