diff --git a/requirements.txt b/requirements.txt
index 1bfa57c..b698a37 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-httpx>=0.21.0,<0.27.0
+httpx>=0.21.0,<0.28.0
 httpcore>=0.17.3,<2.0
 anyio==3.*
 python-socks>=2.0.0
diff --git a/setup.py b/setup.py
index dbd827d..a1c571e 100644
--- a/setup.py
+++ b/setup.py
@@ -34,7 +34,7 @@ def get_long_description():
     packages=['httpx_socks'],
     keywords='httpx asyncio socks socks5 socks4 http proxy',
     install_requires=[
-        'httpx>=0.21.0,<0.27.0',
+        'httpx>=0.21.0,<0.28.0',
         'httpcore>=0.17.3,<2.0',
         'python-socks>=2.0.0',
     ],