diff --git a/book/05-distributed-git/sections/contributing.asc b/book/05-distributed-git/sections/contributing.asc
index 1ecade9ef..3302a198f 100644
--- a/book/05-distributed-git/sections/contributing.asc
+++ b/book/05-distributed-git/sections/contributing.asc
@@ -62,7 +62,7 @@ The Git project requires that the more detailed explanation include your motivat
 It's also a good idea to use the imperative present tense in these messages.
 In other words, use commands.
 Instead of ``I added tests for'' or ``Adding tests for,'' use ``Add tests for.''
-Here is a http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html[template originally written by Tim Pope]:
+Here is a https://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html[template originally written by Tim Pope]:
 
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