diff --git a/setup.py b/setup.py
index a94ffee..9951dfc 100644
--- a/setup.py
+++ b/setup.py
@@ -50,8 +50,22 @@ install_requires = [
 ]
 
 tests_require = [
+    "aiohttp",
+    "boto3",
+    "httplib2",
+    "httpx",
     "pytest",
+    "pytest-aiohttp",
     "pytest-httpbin",
+    "requests",
+    "tornado",
+    # Needed to un-break httpbin 0.7.0. For httpbin >=0.7.1 and after,
+    # this pin and the dependency itself can be removed, provided
+    # that the related bug in httpbin has been fixed:
+    # https://github.com/kevin1024/vcrpy/issues/645#issuecomment-1562489489
+    # https://github.com/postmanlabs/httpbin/issues/673
+    # https://github.com/postmanlabs/httpbin/pull/674
+    "Werkzeug==2.0.3",
 ]
 
 setup(