diff --git a/pyproject.toml b/pyproject.toml
index 2d487d9..d9b30fa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -34,9 +34,7 @@ copapy = ["obj/*.o", "py.typed"]
 dev = [
     "ruff",
     "mypy",
-    "pytest",
-    "requests",
-    "types-requests"
+    "pytest"
 ]
 
 [tool.mypy]
diff --git a/tools/get_binaries.py b/tools/get_binaries.py
index 74c1b60..89fdae3 100644
--- a/tools/get_binaries.py
+++ b/tools/get_binaries.py
@@ -1,15 +1,25 @@
 import os
-import requests
+import json
+from urllib.request import urlopen, Request
 
 OWNER = "Nonannet"
 REPO = "copapy"
 
+def fetch_json(url: str):
+    req = Request(url, headers={"User-Agent": "Python"})
+    with urlopen(req, timeout=10) as resp:
+        assert resp.status == 200
+        return json.load(resp)
+
+def download_file(url: str, dest_path: str):
+    req = Request(url, headers={"User-Agent": "Python"})
+    with urlopen(req, timeout=30) as resp, open(dest_path, "wb") as f:
+        f.write(resp.read())
+
 def main() -> None:
     # Get all releases (includes prereleases)
     api_url = f"https://api.github.com/repos/{OWNER}/{REPO}/releases"
-    resp = requests.get(api_url, timeout=10)
-    resp.raise_for_status()
-    releases = resp.json()
+    releases = fetch_json(api_url)
 
     assert releases, "No releases found."
 
@@ -38,11 +48,7 @@ def main() -> None:
         if dest:
             os.makedirs(dest, exist_ok=True)
             print(f"- Downloading {name} ...")
-            r = requests.get(url, stream=True, timeout=30)
-            r.raise_for_status()
-            with open(os.path.join(dest, name), "wb") as f:
-                for chunk in r.iter_content(chunk_size=8192):
-                    f.write(chunk)
+            download_file(url, os.path.join(dest, name))
             print(f"- Saved {name} to {dest}")
 
 if __name__ == "__main__":