diff --git a/tests/x509/verification/test_limbo.py b/tests/x509/verification/test_limbo.py
index c3fece44b21eb..114405f2393eb 100644
--- a/tests/x509/verification/test_limbo.py
+++ b/tests/x509/verification/test_limbo.py
@@ -6,6 +6,7 @@
 import ipaddress
 import json
 import os
+from typing import Type, Union
 
 import pytest
 
@@ -100,7 +101,7 @@ def _get_limbo_peer(expected_peer):
 def _limbo_testcase(
     id_,
     testcase,
-    builder_type: type[PolicyBuilder] | type[CustomPolicyBuilder],
+    builder_type: Union[Type[PolicyBuilder], Type[CustomPolicyBuilder]],
 ):
     if id_ in LIMBO_SKIP_TESTCASES:
         pytest.skip(f"explicitly skipped testcase: {id_}")
diff --git a/tests/x509/verification/test_verification.py b/tests/x509/verification/test_verification.py
index 576aefc9e5bc6..8b89112b66544 100644
--- a/tests/x509/verification/test_verification.py
+++ b/tests/x509/verification/test_verification.py
@@ -6,6 +6,7 @@
 import os
 from functools import lru_cache
 from ipaddress import IPv4Address
+from typing import Type, Union
 
 import pytest
 
@@ -33,7 +34,7 @@ def dummy_store() -> Store:
     return Store([cert])
 
 
-AnyPolicyBuilder = PolicyBuilder | CustomPolicyBuilder
+AnyPolicyBuilder = Union[PolicyBuilder, CustomPolicyBuilder]
 
 
 @pytest.mark.parametrize("builder_type", [PolicyBuilder, CustomPolicyBuilder])
@@ -43,23 +44,23 @@ class TestPolicyBuilderCommon:
     PolicyBuilder and CustomPolicyBuilder.
     """
 
-    def test_time_already_set(self, builder_type: type[AnyPolicyBuilder]):
+    def test_time_already_set(self, builder_type: Type[AnyPolicyBuilder]):
         with pytest.raises(ValueError):
             builder_type().time(datetime.datetime.now()).time(
                 datetime.datetime.now()
             )
 
-    def test_store_already_set(self, builder_type: type[AnyPolicyBuilder]):
+    def test_store_already_set(self, builder_type: Type[AnyPolicyBuilder]):
         with pytest.raises(ValueError):
             builder_type().store(dummy_store()).store(dummy_store())
 
     def test_max_chain_depth_already_set(
-        self, builder_type: type[AnyPolicyBuilder]
+        self, builder_type: Type[AnyPolicyBuilder]
     ):
         with pytest.raises(ValueError):
             builder_type().max_chain_depth(8).max_chain_depth(9)
 
-    def test_ipaddress_subject(self, builder_type: type[AnyPolicyBuilder]):
+    def test_ipaddress_subject(self, builder_type: Type[AnyPolicyBuilder]):
         policy = (
             builder_type()
             .store(dummy_store())
@@ -67,7 +68,7 @@ def test_ipaddress_subject(self, builder_type: type[AnyPolicyBuilder]):
         )
         assert policy.subject == IPAddress(IPv4Address("0.0.0.0"))
 
-    def test_dnsname_subject(self, builder_type: type[AnyPolicyBuilder]):
+    def test_dnsname_subject(self, builder_type: Type[AnyPolicyBuilder]):
         policy = (
             builder_type()
             .store(dummy_store())
@@ -75,7 +76,7 @@ def test_dnsname_subject(self, builder_type: type[AnyPolicyBuilder]):
         )
         assert policy.subject == DNSName("cryptography.io")
 
-    def test_subject_bad_types(self, builder_type: type[AnyPolicyBuilder]):
+    def test_subject_bad_types(self, builder_type: Type[AnyPolicyBuilder]):
         # Subject must be a supported GeneralName type
         with pytest.raises(TypeError):
             builder_type().store(dummy_store()).build_server_verifier(
@@ -92,7 +93,7 @@ def test_subject_bad_types(self, builder_type: type[AnyPolicyBuilder]):
         with pytest.raises(TypeError):
             builder_type().store(dummy_store()).build_server_verifier(None)  # type: ignore[arg-type]
 
-    def test_builder_pattern(self, builder_type: type[AnyPolicyBuilder]):
+    def test_builder_pattern(self, builder_type: Type[AnyPolicyBuilder]):
         now = datetime.datetime.now().replace(microsecond=0)
         store = dummy_store()
         max_chain_depth = 16
@@ -110,7 +111,7 @@ def test_builder_pattern(self, builder_type: type[AnyPolicyBuilder]):
         assert verifier.eku == ExtendedKeyUsageOID.SERVER_AUTH
 
     def test_build_server_verifier_missing_store(
-        self, builder_type: type[AnyPolicyBuilder]
+        self, builder_type: Type[AnyPolicyBuilder]
     ):
         with pytest.raises(
             ValueError, match="A server verifier must have a trust store"
@@ -153,14 +154,14 @@ def test_store_rejects_non_certificates(self):
 )
 class TestClientVerifier:
     def test_build_client_verifier_missing_store(
-        self, builder_type: type[AnyPolicyBuilder]
+        self, builder_type: Type[AnyPolicyBuilder]
     ):
         with pytest.raises(
             ValueError, match="A client verifier must have a trust store"
         ):
             builder_type().build_client_verifier()
 
-    def test_verify(self, builder_type: type[AnyPolicyBuilder]):
+    def test_verify(self, builder_type: Type[AnyPolicyBuilder]):
         # expires 2018-11-16 01:15:03 UTC
         leaf = _load_cert(
             os.path.join("x509", "cryptography.io.pem"),
@@ -210,7 +211,7 @@ def test_verify(self, builder_type: type[AnyPolicyBuilder]):
         assert len(verified_client.sans) == 2
 
     def test_verify_fails_renders_oid(
-        self, builder_type: type[AnyPolicyBuilder]
+        self, builder_type: Type[AnyPolicyBuilder]
     ):
         leaf = _load_cert(
             os.path.join("x509", "custom", "ekucrit-testuser-cert.pem"),