diff --git a/pkgs/by-name/li/librime-octagram/package.nix b/pkgs/by-name/li/librime-octagram/package.nix
new file mode 100644
index 000000000000..b1b96d5eea6c
--- /dev/null
+++ b/pkgs/by-name/li/librime-octagram/package.nix
@@ -0,0 +1,36 @@
+{
+  lib,
+  stdenvNoCC,
+  fetchFromGitHub,
+  nix-update-script,
+}:
+
+stdenvNoCC.mkDerivation {
+  pname = "librime-octagram";
+  version = "0-unstable-2024-02-05";
+
+  src = fetchFromGitHub {
+    owner = "lotem";
+    repo = "librime-octagram";
+    rev = "bd12863f45fbbd5c7db06d5ec8be8987b10253bf";
+    hash = "sha256-77g72tee4ahNcu3hfW1Okqr9z8Y6WrPgUhw316O72Ng=";
+  };
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir $out
+    cp --archive --verbose * $out
+
+    runHook postInstall
+  '';
+
+  passthru.updateScript = nix-update-script { extraArgs = [ "--version=branch" ]; };
+
+  meta = {
+    description = "RIME essay grammar plugin";
+    homepage = "https://github.com/lotem/librime-octagram";
+    license = lib.licenses.gpl3Only;
+    maintainers = with lib.maintainers; [ azuwis ];
+  };
+}
diff --git a/pkgs/development/libraries/librime/default.nix b/pkgs/development/libraries/librime/default.nix
index 73c335d00e15..6ff2abb11de9 100644
--- a/pkgs/development/libraries/librime/default.nix
+++ b/pkgs/development/libraries/librime/default.nix
@@ -1,5 +1,6 @@
 { lib, stdenv, fetchFromGitHub, cmake, boost, glog, leveldb, marisa, opencc,
-  yaml-cpp, gtest, capnproto, pkg-config, librime-lua, plugins ? [ librime-lua ] }:
+  yaml-cpp, gtest, capnproto, pkg-config, librime-lua, librime-octagram,
+  plugins ? [ librime-lua librime-octagram ] }:
 
 let
   copySinglePlugin = plug: "cp -r ${plug} plugins/${plug.name}";