diff --git a/eleventy.config.js b/eleventy.config.js
index 4505dbd..d89ed3c 100644
--- a/eleventy.config.js
+++ b/eleventy.config.js
@@ -1400,6 +1400,10 @@ export default function (eleventyConfig) {
       const re = new RegExp(`(?<!!)\\]\\((${escaped}/[^)\\s]+)\\)`, "g");
       let m;
       while ((m = re.exec(content)) !== null) add(m[1]);
+      // Also extract reference-style link definitions and bare footnote URLs:
+      // [^1]: https://blog.giersig.eu/...  or  [label]: https://blog.giersig.eu/...
+      const reRef = new RegExp(`^\\[[^\\]]+\\]:\\s+(${escaped}/[^\\s]+)`, "gm");
+      while ((m = reRef.exec(content)) !== null) add(m[1]);
     } catch { /* ignore */ }
     return result;
   });