diff --git a/src/signup.md b/src/signup.md
index 11bfb56..633c741 100644
--- a/src/signup.md
+++ b/src/signup.md
@@ -7,7 +7,7 @@ title: Get Involved
 
 ## Backers
 
-You can [buy FediZineFest 2026-2027 zine bundles on Ko-fi.](ko-fi.com/inherentlee/shop/fedizinefest2026_2027)
+You can [buy FediZineFest 2026-2027 zine bundles on Ko-fi.](https://ko-fi.com/inherentlee/shop/fedizinefest2026_2027)
 
 ## Artists