diff --git a/asn-updater/update.py b/asn-updater/update.py
index 301ba91..806489d 100644
--- a/asn-updater/update.py
+++ b/asn-updater/update.py
@@ -14,6 +14,7 @@ def atomic_replace(src_path: str, dst_path: str) -> None:
     tmp = dst_path + ".tmp"
     shutil.copyfile(src_path, tmp)
     os.replace(tmp, dst_path)
+    os.chmod(dst_path, 0o644)
 
 def download_maxmind_mmdb() -> None:
     if not LICENSE_KEY:
@@ -86,6 +87,7 @@ def update_nren_asns() -> None:
             f.write(f"{a}\n")
         tmp_path = f.name
     os.replace(tmp_path, out_txt)
+    os.chmod(out_txt, 0o644)
 
 def write_meta():
     meta = {
@@ -95,6 +97,7 @@ def write_meta():
     }
     with open(os.path.join(OUT_DIR, "metadata.json"), "w") as f:
         json.dump(meta, f, indent=2)
+    os.chmod(os.path.join(OUT_DIR, "metadata.json"), 0o644)
 
 def main():
     os.makedirs(OUT_DIR, exist_ok=True)