diff --git a/nix/core.nix b/nix/core.nix
index 1a04b85..57397e2 100644
--- a/nix/core.nix
+++ b/nix/core.nix
@@ -46,6 +46,7 @@
     # Nodejs
     nodejs_20
     deno
+    yarn
 
     # Golang
     go