diff --git a/lightkube/config/client_adapter.py b/lightkube/config/client_adapter.py
index eb0b04d..e3af5c6 100644
--- a/lightkube/config/client_adapter.py
+++ b/lightkube/config/client_adapter.py
@@ -1,5 +1,6 @@
 import json
 import os
+import ssl
 import subprocess
 from typing import Optional
 import asyncio.subprocess
@@ -37,8 +38,7 @@ def httpx_parameters(config: SingleConfig, timeout: httpx.Timeout, trust_env: bo
     return dict(
         timeout=timeout,
         base_url=config.cluster.server,
-        verify=verify_cluster(config.cluster, config.abs_file),
-        cert=user_cert(config.user, config.abs_file),
+        verify=verify_cluster(config.cluster, config.user, config.abs_file, trust_env=trust_env),
         auth=user_auth(config.user),
         trust_env=trust_env,
     )
@@ -153,12 +153,15 @@ def user_cert(user: User, abs_file):
     return None
 
 
-def verify_cluster(cluster: Cluster, abs_file):
+def verify_cluster(cluster: Cluster, user: User, abs_file, trust_env: bool = True):
     """setup certificate verification"""
     if cluster.certificate_auth:
-        return abs_file(cluster.certificate_auth)
+        ctx = ssl.create_default_context(cafile=abs_file(cluster.certificate_auth))
     elif cluster.certificate_auth_data:
-        return FileStr(cluster.certificate_auth_data)
-    elif cluster.insecure:
-        return False
-    return True
+        ctx = ssl.create_default_context(cafile=FileStr(cluster.certificate_auth_data))
+    else:
+        ctx = httpx.create_ssl_context(verify=not cluster.insecure, trust_env=trust_env)
+    cert = user_cert(user, abs_file)
+    if cert:
+        ctx.load_cert_chain(*cert)
+    return ctx
diff --git a/setup.py b/setup.py
index 32f576e..62a9cc2 100644
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@
 
 setup(
     name='lightkube',
-    version="0.15.7",
+    version="0.15.8",
     description='Lightweight kubernetes client library',
     long_description=Path("README.md").read_text(),
     long_description_content_type="text/markdown",
@@ -15,13 +15,13 @@
     package_data={'lightkube': ['py.typed']},
     install_requires=[
         'lightkube-models >= 1.15.12.0',
-        'httpx >= 0.24.0, < 0.28.0, < 1.0.0',
+        'httpx >= 0.24.0, < 1.0.0',
         'PyYAML'
     ],
     extras_require={
         "dev": [
             "pytest",
-            "pytest-asyncio<0.17.0",
+            "pytest-asyncio",
             "respx"
         ]
     },