diff --git a/pkgs/by-name/om/omnom/package.nix b/pkgs/by-name/om/omnom/package.nix
index 6d89e3005b4d..0b651a6451cf 100644
--- a/pkgs/by-name/om/omnom/package.nix
+++ b/pkgs/by-name/om/omnom/package.nix
@@ -3,17 +3,21 @@
   buildGoModule,
   fetchFromGitHub,
   makeWrapper,
+
+  # for addons
+  buildNpmPackage,
+  zip,
 }:
 
-buildGoModule {
+buildGoModule rec {
   pname = "omnom";
-  version = "0-unstable-2024-08-29";
+  version = "0-unstable-2024-11-20";
 
   src = fetchFromGitHub {
     owner = "asciimoo";
     repo = "omnom";
-    rev = "1fcd7787886503f703bbcd31b193d4c93acc5610";
-    hash = "sha256-o/n8rgngQkYEn8J0aFpCiD4qrWVFaaa305OxiscU6+8=";
+    rev = "dbf40c9c50b74335286faea7c5070bba11dced83";
+    hash = "sha256-dl0jfFwn+Fd8/aQNhXFNEoDIMgMia2MHZntp0EKhimg=";
     fetchSubmodules = true;
   };
 
@@ -28,24 +32,46 @@ buildGoModule {
     "-w"
   ];
 
-  postPatch = ''
-    # For the default config to work, we have to put `static/data` and
-    # `db.sqlite3` in a temporary directory since they need to be writeable.
-    #
-    # NOTE: Currently, `static/data` only holds the snapshots directory.
-    substituteInPlace config.yml \
-      --replace-fail 'root: "./static/data"' 'root: "/tmp/omnom/static/data"' \
-      --replace-fail 'connection: "./db.sqlite3"' 'connection: "/tmp/omnom/db.sqlite3"' \
-      --replace-fail 'debug: true' 'debug: false'
-  '';
+  postBuild =
+    let
+      omnom-addons = buildNpmPackage {
+        pname = "omnom-addons";
+        inherit version src;
+
+        npmDepsHash = "sha256-sUn5IvcHWJ/yaqeGz9SGvGx9HHAlrcnS0lJxIxUVS6M=";
+        sourceRoot = "${src.name}/ext";
+        npmPackFlags = [ "--ignore-scripts" ];
+
+        nativeBuildInputs = [ zip ];
+
+        postBuild = ''
+          mkdir -p $out
+
+          zip -r "$out/omnom_ext_src.zip" README.md src utils package* webpack.config.js
+
+          pushd build
+            zip "$out/omnom_ext_chrome.zip" ./* icons/* -x manifest_ff.json
+            zip "$out/omnom_ext_firefox.zip" ./* icons/* -x manifest_ff.json
+          popd
+        '';
+
+        postCheck = ''
+          npm run build-test
+        '';
+      };
+    in
+    ''
+      mkdir -p $out/share/addons
+
+      # Copy Firefox and Chrome addons
+      cp -r ${omnom-addons}/*.zip $out/share/addons
+    '';
 
   postInstall = ''
-    mkdir -p $out/share
-    cp -r config.yml static templates $out/share
+    mkdir -p $out/share/examples
 
-    wrapProgram $out/bin/omnom \
-      --chdir $out/share \
-      --set-default GIN_MODE release
+    cp -r static templates $out/share
+    cp config.yml_sample $out/share/examples/config.yml
   '';
 
   meta = {