Index: autopage-0.5.1/autopage/tests/test_autopage.py
===================================================================
--- autopage-0.5.1.orig/autopage/tests/test_autopage.py
+++ autopage-0.5.1/autopage/tests/test_autopage.py
@@ -37,6 +37,9 @@ class PagedStreamTest(fixtures.TestWithF
         popen = fixtures.MockPatch('subprocess.Popen')
         self.useFixture(popen)
         self.popen = popen.mock
+        self.encoding = 'UTF-8'
+        if sys.version_info >= (3, 11):
+            self.encoding = 'utf-8'
 
     def test_defaults(self) -> None:
         class TestCommand(command.PagerCommand):
@@ -58,7 +61,7 @@ class PagedStreamTest(fixtures.TestWithF
                 env=get_env.return_value,
                 bufsize=-1,
                 universal_newlines=True,
-                encoding='UTF-8',
+                encoding=self.encoding,
                 errors='strict',
                 stdin=subprocess.PIPE,
                 stdout=None)
@@ -84,7 +87,7 @@ class PagedStreamTest(fixtures.TestWithF
                     env=get_env.return_value,
                     bufsize=-1,
                     universal_newlines=True,
-                    encoding='UTF-8',
+                    encoding=self.encoding,
                     errors='strict',
                     stdin=subprocess.PIPE,
                     stdout=None)
@@ -100,7 +103,7 @@ class PagedStreamTest(fixtures.TestWithF
                 env=get_env.return_value,
                 bufsize=-1,
                 universal_newlines=True,
-                encoding='UTF-8',
+                encoding=self.encoding,
                 errors='strict',
                 stdin=subprocess.PIPE,
                 stdout=None)