diff --git a/4.2.4-Header-Editor.md b/4.2.4-Header-Editor.md
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--- a/4.2.4-Header-Editor.md
+++ b/4.2.4-Header-Editor.md
@@ -1 +1,2 @@
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+[Header Editor](https://addons.mozilla.org/firefox/addon/header-editor/) | [GitHub](https://github.com/FirefoxBar/HeaderEditor)
+