diff --git a/hook/hook.php b/hook/hook.php
index 9d7e2c3..6eda360 100644
--- a/hook/hook.php
+++ b/hook/hook.php
@@ -12,4 +12,18 @@ if($valid_hmac != $req_hmac){
     die('');
 }
 
-exec("git pull -q 2>&1", $output);
\ No newline at end of file
+exec("git pull -q 2>&1", $output);
+
+exec("git ls-files -z ../icons", $raw_img_list);
+$raw_img_list = explode("\x00", $raw_img_list[0]);
+$img_list = [];
+foreach ($raw_img_list as $path) {
+    $pos = strpos($path, '../icons/');
+    if($pos === false){
+        continue;
+    }
+    $path = substr($path, $pos + 9);
+    $img_list[] = $path;
+}
+
+file_put_contents('list.json', json_encode($img_list,JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT));
\ No newline at end of file