diff --git a/compiler/asar/default.nix b/compiler/asar/default.nix
new file mode 100644
index 0000000..84b1089
--- /dev/null
+++ b/compiler/asar/default.nix
@@ -0,0 +1,20 @@
+{
+  fetchFromGitHub,
+  cmake,
+  ninja,
+  stdenv,
+}: let
+  source = builtins.fromJSON (builtins.readFile ./source.json);
+in
+  stdenv.mkDerivation {
+    pname = "asar";
+    version = source.date;
+    src = fetchFromGitHub {
+      owner = "RPGHacker";
+      repo = "asar";
+      inherit (source) rev sha256;
+    };
+    nativeBuildInputs = [cmake ninja];
+    cmakeDir = "../src";
+    passthru.updateScript = [../../scripts/update-git.sh "https://github.com/RPGHacker/asar" "compiler/asar/source.json"];
+  }
diff --git a/compiler/asar/source.json b/compiler/asar/source.json
new file mode 100644
index 0000000..2aaef6d
--- /dev/null
+++ b/compiler/asar/source.json
@@ -0,0 +1,11 @@
+{
+  "url": "https://github.com/RPGHacker/asar",
+  "rev": "d39723aa3bd071f685e670914ec7b4e47a7e0455",
+  "date": "2023-07-16T03:47:38+03:00",
+  "path": "/nix/store/azqqw9j7wjxk2bgpd9nl14n0s2cy6pxf-asar",
+  "sha256": "1gawm1akq1q40mbmlpcrq3krz563ckp5c1bi2v7l3cq2mk24l3zc",
+  "fetchLFS": false,
+  "fetchSubmodules": false,
+  "deepClone": false,
+  "leaveDotGit": false
+}
diff --git a/default.nix b/default.nix
index 10d4491..a9b1159 100644
--- a/default.nix
+++ b/default.nix
@@ -75,6 +75,7 @@ in
       fcitx5
       plover-plugin-python-dictionary
       plover-plugin-stenotype-extended
+      asar
       ;
   }
   // (
diff --git a/flake.nix b/flake.nix
index c8d5eae..0186a80 100644
--- a/flake.nix
+++ b/flake.nix
@@ -119,6 +119,7 @@
               fcitx5
               plover-plugin-python-dictionary
               plover-plugin-stenotype-extended
+              asar
               ;
           }
           // (
diff --git a/overlay.nix b/overlay.nix
index a40c70c..33e6cd0 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -127,6 +127,7 @@ system: self: super: let
       });
       linux-bcachefs = self.callPackage ./linux/bcachefs {kernelPatches = [];};
       bcachefs-tools = self.callPackage ./linux/bcachefs-tools {};
+      asar = self.callPackage ./compiler/asar {};
     })
     riscv-overlay
   ];