diff --git a/nix/module/home-manager.nix b/nix/module/home-manager.nix
index c467caa..45e8de8 100644
--- a/nix/module/home-manager.nix
+++ b/nix/module/home-manager.nix
@@ -3,6 +3,13 @@
   home.file.".emacs.d/tree-sitter/libtree-sitter-swift.dylib".source = ../config/emacs/tree-sitter/libtree-sitter-swift.dylib;
   home.file.".clojure/deps.edn".source = ../config/clojure/deps.edn;
 
+  home.language = {
+    base = "en_US.utf8";
+    numeric = "de_DE.utf8";
+    time = "de_DE.utf8";
+    measurement = "de_DE.utf8";
+  };
+
   home.packages = with pkgs; [
     bottom
     cascadia-code