diff --git a/devenv.nix b/devenv.nix
index 1d9517c1e..7e8c4ed87 100644
--- a/devenv.nix
+++ b/devenv.nix
@@ -13,6 +13,7 @@
     pkgs.mkcert
     pkgs.nss.tools
     pkgs.gh
+    pkgs.typescript-language-server
     (pkgs.callPackage ./tools/convert-to-webp {})
   ];