From 86090d454c276fb74f1dc1aa0c72786b606d8175 Mon Sep 17 00:00:00 2001
From: Paul Schaub <vanitasvitae@fsfe.org>
Date: Wed, 13 Dec 2023 12:48:41 +0100
Subject: [PATCH] Add installation resources for lychee and epubcheck

---
 CONTRIBUTING.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index c5b0243..76b9c86 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -32,8 +32,8 @@ The following packages need to be installed on the system in order for the build
 Optional dependencies:
 
 * `codespell`
-* `lychee`
-* `epubcheck`
+* `lychee`: [Installation](https://lycheeorg.github.io/docs/#installation)
+* `epubcheck`: [Installation](https://www.w3.org/publishing/epubcheck/docs/installation/)
 
 The below examples show how to use it with a book named `book`.