diff --git a/requirements.txt b/requirements.txt
index be6a773..1511f80 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,4 @@
 bs4~=0.0.1
-beautifulsoup4~=4.12.2
-fishhook~=0.2.9
-requests~=2.31.0
+beautifulsoup4~=4.12
+requests~=2.32
 tqdm~=4.66
\ No newline at end of file
diff --git a/src/tools/tools.py b/src/tools/tools.py
index d9169fb..63f5cdb 100644
--- a/src/tools/tools.py
+++ b/src/tools/tools.py
@@ -2,8 +2,6 @@ import datetime
 import inspect
 import os.path
 import sys
-from fishhook import hook
-from functools import wraps
 from typing import Any
 
 
@@ -140,51 +138,3 @@ def human_readable_time_from_ns(ns: int) -> str:
         time_parts.insert(0, "%d%s" % (p, unit))
         if ns == 0:
             return ", ".join(time_parts)
-
-
-def cache(func):
-    saved = {}
-
-    @wraps(func)
-    def new_func(*args):
-        if args in saved:
-            return saved[args]
-
-        result = func(*args)
-        saved[args] = result
-        return result
-
-    return new_func
-
-
-@hook(list)
-def intersection(self, *args) -> list:
-    ret = set(self).intersection(*args)
-    return list(ret)
-
-
-@hook(list)
-def __and__(self, *args) -> list:
-    return self.intersection(*args)
-
-
-@hook(str)
-def intersection(self, *args) -> str:
-    ret = set(self).intersection(*args)
-    return "".join(list(ret))
-
-
-@hook(str)
-def __and__(self, *args) -> str:
-    return self.intersection(*args)
-
-
-@hook(int)
-def sum_digits(self) -> int:
-    s = 0
-    num = self
-    while num > 0:
-        s += num % 10
-        num //= 10
-
-    return s
diff --git a/src/tools/types.py b/src/tools/types.py
new file mode 100644
index 0000000..68c652c
--- /dev/null
+++ b/src/tools/types.py
@@ -0,0 +1,20 @@
+from __future__ import annotations
+from collections.abc import Iterable
+
+
+class Integer(int):
+    def digits(self) -> Iterable[int]:
+        for x in str(self):
+            yield int(x)
+
+    def digits_sum(self) -> int:
+        return sum(int(x) for x in str(self))
+
+
+class String(str):
+    def swap(self, x: int, y: int) -> String:
+        return String(self[:x] + self[y] + self[x + 1 : y] + self[x] + self[y + 1 :])
+
+
+class List(list):
+    pass