diff --git a/content/2022-06-09-nix-registry.md b/content/2022-06-09-nix-registry.md
index 3bbf4f2..e1470e2 100644
--- a/content/2022-06-09-nix-registry.md
+++ b/content/2022-06-09-nix-registry.md
@@ -2,6 +2,7 @@ Title: Nix registry
 Author: Paul-Nicolas Madelaine
 Date: 2022-06-09
 Category: Blog
+Summary: A quick note about a small trick I implemented in my NixOS configurations.
 
 *A quick note about a small trick I implemented in my NixOS configurations.*