diff --git a/.isort.cfg b/.isort.cfg
index 76c6f842..02dbdee4 100644
--- a/.isort.cfg
+++ b/.isort.cfg
@@ -1,2 +1,2 @@
 [settings]
-known_third_party = aniso8601,graphql,graphql_relay,promise,pytest,pytz,pyutils,setuptools,snapshottest,sphinx_graphene_theme
+known_third_party = aniso8601,graphql,graphql_relay,promise,pytest,pyutils,setuptools,snapshottest,sphinx_graphene_theme
diff --git a/graphene/types/tests/test_datetime.py b/graphene/types/tests/test_datetime.py
index 74f88bd8..12927617 100644
--- a/graphene/types/tests/test_datetime.py
+++ b/graphene/types/tests/test_datetime.py
@@ -1,6 +1,5 @@
 import datetime
 
-import pytz
 from graphql import GraphQLError
 
 from pytest import fixture
@@ -30,7 +29,7 @@ def resolve_time(self, info, _at=None):
 
 @fixture
 def sample_datetime():
-    utc_datetime = datetime.datetime(2019, 5, 25, 5, 30, 15, 10, pytz.utc)
+    utc_datetime = datetime.datetime(2019, 5, 25, 5, 30, 15, 10, datetime.timezone.utc)
     return utc_datetime
 
 
diff --git a/setup.py b/setup.py
index 792767f6..f11c0bf8 100644
--- a/setup.py
+++ b/setup.py
@@ -53,7 +53,6 @@ def run_tests(self):
     "snapshottest>=0.6,<1",
     "coveralls>=3.3,<4",
     "mock>=5,<6",
-    "pytz==2022.1",
     "iso8601>=2,<3",
 ]