diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index dfe1cdc..3350ba8 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -27,10 +27,11 @@ jobs:
 
   test:
     name: unittests
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04 # Ubuntu LTS 22.04 is the latest image that includes Python3.7
     strategy:
       matrix:
         toxenv:
+          - py37-scrapy29
           - py312-scrapy29
           - py38-scrapy210
           - py312-scrapy210
@@ -38,6 +39,8 @@ jobs:
           - py312-scrapy211
           - py312-scrapymaster
         include:
+          - toxenv: py37-scrapy29
+            python-version: 3.7
           - toxenv: py312-scrapy29
             python-version: '3.12'
 
diff --git a/README.md b/README.md
index 7c35a08..94e2e2b 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ Scrapy Webarchive is a plugin for Scrapy that allows users to capture and export
 
 ## Compatibility
 
-* Python 3.8, 3.9, 3.10, 3.11 and 3.12
+* Python 3.7, 3.8, 3.9, 3.10, 3.11 and 3.12
 
 ## Documentation
 
diff --git a/pyproject.toml b/pyproject.toml
index ad82579..e9af0de 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -13,7 +13,7 @@ dependencies = [
     "wacz==0.5.0",
     "cdxj-indexer==1.4.5",
 ]
-requires-python = ">=3.8,<3.13"
+requires-python = ">=3.7,<3.13"
 authors = []
 maintainers = []
 description = "A webarchive extension for Scrapy"
diff --git a/scrapy_webarchive/wacz/storages.py b/scrapy_webarchive/wacz/storages.py
index 313bce2..57732c6 100644
--- a/scrapy_webarchive/wacz/storages.py
+++ b/scrapy_webarchive/wacz/storages.py
@@ -3,7 +3,6 @@
 import struct
 import zipfile
 from abc import ABC, abstractmethod
-from functools import cached_property
 from io import BytesIO
 from urllib.parse import unquote, urlparse
 
@@ -207,7 +206,7 @@ def _calculate_range(self, metadata: dict, offset: int, size: int) -> str:
         end = start + size - 1
         return f"bytes={start}-{end}"
 
-    @cached_property
+    @property
     def zip_exists(self) -> bool:
         return bool(self.get_file_info())
 
diff --git a/tox.ini b/tox.ini
index ee49c82..e778c69 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,7 +3,8 @@ skipsdist = True
 usedevelop = True
 
 envlist =
-    py{38,39,310,311,312}-scrapy{29,210,211},
+    py{37,38,39,310,311,312}-scrapy29,
+    py{38,39,310,311,312}-scrapy{210,211},
     py{39,310,311,312}-scrapymaster,
 
 [testenv]
@@ -12,6 +13,7 @@ allowlist_externals = py.test
 commands =
     py.test tests/
 basepython =
+    py37: python3.7
     py38: python3.8
     py39: python3.9
     py310: python3.10