diff --git a/tests/integration/test_app_routes.py b/tests/integration/test_app_routes.py
index 18e0a73..d362ddb 100644
--- a/tests/integration/test_app_routes.py
+++ b/tests/integration/test_app_routes.py
@@ -6,6 +6,7 @@ import subprocess
 import sys
 import tempfile
 import unittest
+from html.parser import HTMLParser
 from pathlib import Path
 from unittest.mock import Mock, patch
 
@@ -112,18 +113,29 @@ class TestEscaping(AppRouteMixin, unittest.TestCase):
         self.assertIn("<script>alert('config')", body)
 
 
+class InlineScriptCollector(HTMLParser):
+    def __init__(self):
+        super().__init__()
+        self.inline = []
+
+    def handle_starttag(self, tag, attrs):
+        if tag != "script":
+            return
+        attributes = dict(attrs)
+        if "src" in attributes or attributes.get("type") == "application/json":
+            return
+        self.inline.append(self.get_starttag_text())
+
+
 class TestContentSecurityPolicy(AppRouteMixin, unittest.TestCase):
     def test_page_ships_no_executable_inline_script(self):
         body = self.client.get("/de/").get_data(as_text=True)
 
-        inline = [
-            tag
-            for tag in re.findall(r"<script\b[^>]*>", body)
-            if "src=" not in tag and 'type="application/json"' not in tag
-        ]
+        collector = InlineScriptCollector()
+        collector.feed(body)
 
         self.assertEqual(
-            inline,
+            collector.inline,
             [],
             "a host CSP can only hash an inline script whose content it knows, "
             "and this one changes with every language",
diff --git a/tests/unit/test_i18n.py b/tests/unit/test_i18n.py
index 5366c19..50ef208 100644
--- a/tests/unit/test_i18n.py
+++ b/tests/unit/test_i18n.py
@@ -2,8 +2,8 @@ import re
 import shutil
 import tempfile
 import unittest
+import unittest.mock
 from pathlib import Path
-from unittest import mock
 
 import yaml
 
@@ -170,7 +170,7 @@ class TestCatalogMerge(unittest.TestCase):
         )
 
     def test_an_unsupported_code_never_becomes_a_path(self):
-        with mock.patch.object(i18n, "read_catalog") as read:
+        with unittest.mock.patch.object(i18n, "read_catalog") as read:
             self.assertEqual(i18n.catalog("../content/de"), {})
 
         read.assert_not_called()