diff --git a/README.md b/README.md
index 11bec22..c298fc9 100644
--- a/README.md
+++ b/README.md
@@ -111,7 +111,6 @@ Config file values can be overridden using command-line arguments.
 | `--temp-path` / `temp_path`                                     | Path to temporary directory.                                       | `temp`                                         |
 | `--wvd-path` / `wvd_path`                                       | Path to .wvd file.                                                 | `device.wvd`                                   |
 | `--aria2c-path` / `aria2c_path`                                 | Path to aria2c binary.                                             | `aria2c`                                       |
-| `--unplayplay-path` / `unplayplay_path`                         | Path to unplayplay binary.                                         | `unplayplay`                                   |
 | `--ffmpeg-path` / `ffmpeg_path`                                 | Path to ffmpeg binary.                                             | `ffmpeg`                                       |
 | `--mp4box-path` / `mp4box_path`                                 | Path to MP4Box binary.                                             | `mp4box`                                       |
 | `--mp4decrypt-path` / `mp4decrypt_path`                         | Path to mp4decrypt binary.                                         | `mp4decrypt`                                   |
diff --git a/pyproject.toml b/pyproject.toml
index 50455b5..7e9a0df 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,6 +10,7 @@ dependencies = [
     "protobuf",
     "pybase62",
     "pycryptodome",
+    "re-unplayplay",
     "yt-dlp",
 ]
 readme = "README.md"
diff --git a/requirements.txt b/requirements.txt
index 04c93d3..5ffb21b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,4 +4,5 @@ pillow
 protobuf
 pybase62
 pycryptodome
+re-unplayplay
 yt-dlp
diff --git a/votify/cli.py b/votify/cli.py
index 4c5f312..c748206 100644
--- a/votify/cli.py
+++ b/votify/cli.py
@@ -174,12 +174,6 @@ def load_config_file(
     default=downloader_sig.parameters["aria2c_path"].default,
     help="Path to aria2c binary.",
 )
-@click.option(
-    "--unplayplay-path",
-    type=str,
-    default=downloader_sig.parameters["unplayplay_path"].default,
-    help="Path to unplayplay binary.",
-)
 @click.option(
     "--ffmpeg-path",
     type=str,
@@ -362,7 +356,6 @@ def main(
     wvd_path: Path,
     download_mode: DownloadMode,
     aria2c_path: str,
-    unplayplay_path: str,
     ffmpeg_path: str,
     mp4box_path: str,
     mp4decrypt_path: str,
@@ -403,7 +396,6 @@ def main(
         temp_path,
         wvd_path,
         aria2c_path,
-        unplayplay_path,
         ffmpeg_path,
         mp4box_path,
         mp4decrypt_path,
@@ -485,12 +477,6 @@ def main(
                 )
                 return
             downloader.set_cdm()
-        else:
-            if not downloader.unplayplay_path_full:
-                logger.critical(
-                    X_NOT_FOUND_STRING.format("Unplayplay", unplayplay_path)
-                )
-                return
         if download_mode == DownloadMode.ARIA2C and not downloader.aria2c_path_full:
             logger.critical(X_NOT_FOUND_STRING.format("aria2c", aria2c_path))
             return
diff --git a/votify/downloader.py b/votify/downloader.py
index c616365..485584a 100644
--- a/votify/downloader.py
+++ b/votify/downloader.py
@@ -10,6 +10,7 @@ import subprocess
 from io import BytesIO
 from pathlib import Path
 
+from re_unplayplay import decrypt_and_bind_key
 import requests
 from InquirerPy import inquirer
 from InquirerPy.base.control import Choice
@@ -50,7 +51,6 @@ class Downloader:
         temp_path: Path = Path("./temp"),
         wvd_path: Path = Path("./device.wvd"),
         aria2c_path: str = "aria2c",
-        unplayplay_path: str = "unplayplay",
         ffmpeg_path: str = "ffmpeg",
         mp4box_path: str = "mp4box",
         mp4decrypt_path: str = "mp4decrypt",
@@ -78,7 +78,6 @@ class Downloader:
         self.temp_path = temp_path
         self.wvd_path = wvd_path
         self.aria2c_path = aria2c_path
-        self.unplayplay_path = unplayplay_path
         self.ffmpeg_path = ffmpeg_path
         self.mp4box_path = mp4box_path
         self.mp4decrypt_path = mp4decrypt_path
@@ -107,7 +106,6 @@ class Downloader:
 
     def _set_binaries_full_path(self):
         self.aria2c_path_full = shutil.which(self.aria2c_path)
-        self.unplayplay_path_full = shutil.which(self.unplayplay_path)
         self.ffmpeg_path_full = shutil.which(self.ffmpeg_path)
         self.mp4box_path_full = shutil.which(self.mp4box_path)
         self.mp4decrypt_path_full = shutil.which(self.mp4decrypt_path)
@@ -375,17 +373,8 @@ class Downloader:
         )
         playplay_license_response = PlayPlayLicenseResponse()
         playplay_license_response.ParseFromString(playplay_license_response_bytes)
-        obfuscated = playplay_license_response.obfuscated_key.hex()
-        output = subprocess.check_output(
-            [
-                self.unplayplay_path_full,
-                file_id,
-                obfuscated,
-            ],
-            shell=False,
-        )
-        key = bytes.fromhex(output.strip().decode("utf-8"))
-        assert key
+        obfuscated_key = playplay_license_response.obfuscated_key
+        key = decrypt_and_bind_key(obfuscated_key, file_id)
         return key
 
     def get_widevine_decryption_key(