diff --git a/nix/devshells.nix b/nix/devshells.nix
index 13aabe9..b3447a5 100644
--- a/nix/devshells.nix
+++ b/nix/devshells.nix
@@ -8,7 +8,7 @@ _: {
     }:
     {
       devShells = {
-        default = pkgs.mkShell {
+        hugo = pkgs.mkShell {
           name = "hugo-shell";
           nativeBuildInputs = config.develPackages
             ++ config.hugoBuildPackages
diff --git a/nix/packages.nix b/nix/packages.nix
index 54e0923..55d6eab 100644
--- a/nix/packages.nix
+++ b/nix/packages.nix
@@ -32,6 +32,7 @@ in
                 libertine
                 listings
                 lstfiracode
+                calrsfs
                 pdfpages
                 pdflscape
                 scheme-basic