diff --git a/nixos/flake.nix b/nixos/flake.nix
index 2440f38..ee2996e 100644
--- a/nixos/flake.nix
+++ b/nixos/flake.nix
@@ -38,6 +38,10 @@
         allowUnfree = true;
       };
 
+      sharedOverlays = [
+        (import ./overlays/letter)
+      ];
+
       hostDefaults = {
         inherit system;
 
diff --git a/nixos/modules/default.nix b/nixos/modules/default.nix
index 6eb2beb..e150275 100644
--- a/nixos/modules/default.nix
+++ b/nixos/modules/default.nix
@@ -15,6 +15,11 @@
     keep-derivations = true
   '';
 
+  fonts.fonts = with pkgs; [
+    corefonts      # Calibri for Uni
+    letter         # Personal font
+  ];
+
   users.users.tdpeuter = {
     description = "Tibo De Peuter";
     isNormalUser = true;
@@ -50,10 +55,7 @@
       stateVersion = "23.05";
 
       packages = with pkgs; [
-        gnupg
-        
-        # Fonts
-        corefonts      # Calibri for Uni
+        gnupg  
       ];
     };
 
diff --git a/nixos/overlays/letter/default.nix b/nixos/overlays/letter/default.nix
new file mode 100644
index 0000000..d494bf4
--- /dev/null
+++ b/nixos/overlays/letter/default.nix
@@ -0,0 +1,18 @@
+final: prev: {
+  letter = final.stdenv.mkDerivation {
+    name = "letter";
+    version = "v1.0.0";
+    src = final.fetchFromGitea {
+      domain = "git.depeuter.dev";
+      owner = "tdpeuter";
+      repo = "letter";
+      rev = "v1.0.0";
+      hash = "sha256-2HaXZMIYSauqj9Cy7rRzYGyuYLno9AHAXpWsyD+BdtE=";
+    };
+
+    installPhase = ''
+      mkdir -p $out/share/fonts
+      cp -R $src/ttf $out/share/fonts/letter
+    '';
+  };
+}
diff --git a/stow/alacritty/.config/alacritty/alacritty.yml b/stow/alacritty/.config/alacritty/alacritty.yml
index 4ea1c1b..dcd08cc 100644
--- a/stow/alacritty/.config/alacritty/alacritty.yml
+++ b/stow/alacritty/.config/alacritty/alacritty.yml
@@ -102,41 +102,41 @@ window:
   #multiplier: 3
 
 # Font configuration
-# font:
+font:
   # Normal (roman) font face
-  # normal:
+  normal:
     # Font family
     #
     # Default:
     #   - (macOS) Menlo
     #   - (Linux/BSD) monospace
     #   - (Windows) Consolas
-    # family: Letter
+    family: Letter
 
     # The `style` can be specified to pick a specific face.
-    # style: Extended
+    style: Extended
 
   # Bold font face
-  # bold:
+  bold:
     # Font family
     #
     # If the bold family is not specified, it will fall back to the
     # value specified for the normal font.
-    # family: Letter
+    family: Letter
 
     # The `style` can be specified to pick a specific face.
-    # style: Heavy
+    style: Heavy
 
   # Italic font face
-  # italic:
+  italic:
     # Font family
     #
     # If the italic family is not specified, it will fall back to the
     # value specified for the normal font.
-    # family: Letter
+    family: Letter
 
     # The `style` can be specified to pick a specific face.
-    # style: Oblique
+    style: Oblique
 
   # Bold italic font face
   #bold_italic:
diff --git a/stow/kitty/.config/kitty/kitty.conf b/stow/kitty/.config/kitty/kitty.conf
index 9f69a3d..2504662 100644
--- a/stow/kitty/.config/kitty/kitty.conf
+++ b/stow/kitty/.config/kitty/kitty.conf
@@ -8,10 +8,10 @@ include ./themes/tdpeuter-dark.conf
 #: individual font faces and even specify special fonts for particular
 #: characters.
 
-# font_family      monospace
-# bold_font        auto
-# italic_font      auto
-# bold_italic_font auto
+font_family      Letter Extended
+bold_font        Letter Semibold Extended
+italic_font      Letter Extended Oblique
+bold_italic_font Letter Semibold Extended Oblique
 
 #: You can specify different fonts for the bold/italic/bold-italic
 #: variants. To get a full list of supported fonts use the `kitty
@@ -77,7 +77,7 @@ include ./themes/tdpeuter-dark.conf
 
 #:     narrow_symbols codepoints [optionally the number of cells]
 
-# disable_ligatures never
+disable_ligatures always
 
 #: Choose how you want to handle multi-character ligatures. The
 #: default is to always render them. You can tell kitty to not render
@@ -363,7 +363,7 @@ touch_scroll_multiplier 2.0
 #: much effort.
 
 url_color #94E2D5
-url_style stright
+url_style straight
 
 #: The color and style for highlighting URLs on mouse-over. url_style
 #: can be one of: none, straight, double, curly, dotted, dashed.