diff --git a/requirements.txt b/requirements.txt
index c420642..8be4851 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ hexbytes==0.2.1
 lru-dict==1.1.7
 eth-hash[pycryptodome]==0.3.1
 requests==2.16.0
-websockets==7.0
+websockets==9.1
 pypiwin32==223;platform_system=='Windows'
 
 # test
diff --git a/setup.py b/setup.py
index 872cbc9..36aecfa 100644
--- a/setup.py
+++ b/setup.py
@@ -79,7 +79,7 @@
         "lru-dict>=1.1.6,<2.0.0",
         "eth-hash[pycryptodome]>=0.2.0,<1.0.0",
         "requests>=2.16.0,<3.0.0",
-        "websockets>=6.0.0,<=7.0.0",
+        "websockets>=6.0.0,<10.0.0",
         "pypiwin32>=223;platform_system=='Windows'",
     ],
     setup_requires=['setuptools-markdown'],