diff --git a/default.nix b/default.nix
index 24b32e0..25a1da7 100644
--- a/default.nix
+++ b/default.nix
@@ -29,4 +29,5 @@
   fairfax = pkgs.callPackage ./fonts/kreative/fairfax.nix {};
   fairfax-hd = pkgs.callPackage ./fonts/kreative/fairfax-hd.nix {};
   kreative-square = pkgs.callPackage ./fonts/kreative/kreative-square.nix {};
+  nasin-nanpa = pkgs.callPackage ./fonts/nasin-nanpa {};
 }
diff --git a/fonts/kreative/kreative-square.nix b/fonts/kreative/kreative-square.nix
index 6724de3..c14b8b1 100644
--- a/fonts/kreative/kreative-square.nix
+++ b/fonts/kreative/kreative-square.nix
@@ -1,6 +1,11 @@
-{ stdenv, callPackage, lib }: 
-  let source = builtins.fromJSON (builtins.readFile ./source.json);
-  in stdenv.mkDerivation {
+{
+  stdenv,
+  callPackage,
+  lib,
+}: let
+  source = builtins.fromJSON (builtins.readFile ./source.json);
+in
+  stdenv.mkDerivation {
     name = "kreative-square";
     version = source.date;
     src = callPackage ./source.nix {};
@@ -15,4 +20,4 @@
       description = "Fullwidth scalable monospace font with many Box Drawing characters";
       license = lib.licenses.ofl;
     };
-  }
\ No newline at end of file
+  }
diff --git a/fonts/nasin-nanpa.nix b/fonts/nasin-nanpa.nix
deleted file mode 100644
index 91176ca..0000000
--- a/fonts/nasin-nanpa.nix
+++ /dev/null
@@ -1,32 +0,0 @@
-{
-  inputs,
-  pkgs,
-  ...
-}: rec {
-  nasin-nanpa = pkgs.stdenvNoCC.mkDerivation rec {
-    pname = "nasin-nanpa";
-    version = "2.5.25";
-    src = inputs.nasin-nanpa;
-    nativeBuildInputs = [pkgs.fontforge];
-    buildPhase = ''
-      fontforge -lang=ff -c 'Open($1); Generate($2)' "ffversions/2.5/nasin-nanpa-${version}.sfd" "nasin-nanpa.otf"
-    '';
-    installPhase = ''
-      install -m444 -Dt $out/share/fonts/opentype/nasin-nanpa nasin-nanpa.otf
-    '';
-  };
-  nasin-nanpa-woff2 = pkgs.stdenvNoCC.mkDerivation rec {
-    name = "nasin-nanpa-${nasin-nanpa.version}.woff2";
-    inherit (nasin-nanpa) version;
-    src = inputs.nasin-nanpa;
-    buildInputs = [nasin-nanpa];
-    nativeBuildInputs = [pkgs.woff2];
-    buildPhase = ''
-      cp ${nasin-nanpa}/share/fonts/opentype/nasin-nanpa/nasin-nanpa.otf .
-      woff2_compress nasin-nanpa.otf
-    '';
-    installPhase = ''
-      cp nasin-nanpa.woff2 $out
-    '';
-  };
-}
diff --git a/fonts/nasin-nanpa/default.nix b/fonts/nasin-nanpa/default.nix
new file mode 100644
index 0000000..d667b76
--- /dev/null
+++ b/fonts/nasin-nanpa/default.nix
@@ -0,0 +1,31 @@
+{
+  stdenv,
+  fontforge,
+  fetchFromGitHub,
+  lib,
+  writeScript,
+}: let
+  source = builtins.fromJSON (builtins.readFile ./source.json);
+  version = builtins.fromJSON (builtins.readFile ./version.json);
+in
+  stdenv.mkDerivation {
+    pname = "nasin-nanpa";
+    version = "${version.minor}";
+    src = fetchFromGitHub {
+      owner = "ETBCOR";
+      repo = "nasin-nanpa";
+      inherit (source) rev sha256;
+    };
+    nativeBuildInputs = [fontforge];
+    buildPhase = "fontforge -lang=ff -c 'Open($1); Generate($2)' \"ffversions/${version.major}/nasin-nanpa-${version.minor}.sfd\" \"nasin-nanpa.otf\"";
+    installPhase = "install -m444 -Dt $out/share/fonts/opentype/nasin-nanpa nasin-nanpa.otf";
+    meta = {
+      description = "A font for sitelen pona";
+      license = lib.licenses.mit;
+    };
+    passthru.updateScript = writeScript "update-nasin-nanpa" ''
+      ${../../scripts/update-git.sh} https://github.com/ETBCOR/nasin-nanpa fonts/nasin-nanpa/source.json
+      SRC_PATH=$(nix-build -E '(import ./. {}).nasin-nanpa.src')
+      ls ffversions/*/*.sfd | sort | tail -n1 | sed 's|[/-]| |g' | sed 's/.sfd//' | awk '{print "{\"major\": \"" $2 "\", \"minor\": \"" $5 "\"}" }' > fonts/nasin-nanpa/version.json
+    '';
+  }
diff --git a/fonts/nasin-nanpa/source.json b/fonts/nasin-nanpa/source.json
new file mode 100644
index 0000000..07cccf7
--- /dev/null
+++ b/fonts/nasin-nanpa/source.json
@@ -0,0 +1,11 @@
+{
+  "url": "https://github.com/ETBCOR/nasin-nanpa",
+  "rev": "4cf4a762576d8ca2818683139ab1d04d149c9bec",
+  "date": "2022-05-22T16:25:11-07:00",
+  "path": "/nix/store/riz85kank0n3d94jnhyl8yn4cy100653-nasin-nanpa",
+  "sha256": "172asramnmp0m8h6sm8mvzap1ys2zngbrd4m5gq2w899vr8qzpbz",
+  "fetchLFS": false,
+  "fetchSubmodules": false,
+  "deepClone": false,
+  "leaveDotGit": false
+}
diff --git a/fonts/nasin-nanpa/version.json b/fonts/nasin-nanpa/version.json
new file mode 100644
index 0000000..e69de29