diff --git a/awscli/customizations/codeartifact/login.py b/awscli/customizations/codeartifact/login.py
index ff8818b0ba8a..b6f1e2a376fe 100644
--- a/awscli/customizations/codeartifact/login.py
+++ b/awscli/customizations/codeartifact/login.py
@@ -469,7 +469,7 @@ def _run_command(self, tool, command):
     @classmethod
     def get_scope(cls, namespace):
         # Regex for valid scope name
-        valid_scope_name = re.compile('^(@[a-z0-9-~][a-z0-9-._~]*)')
+        valid_scope_name = re.compile('^(@[a-zA-Z0-9-~][a-zA-Z0-9-._~]*)')
 
         if namespace is None:
             return namespace
diff --git a/tests/unit/customizations/codeartifact/test_adapter_login.py b/tests/unit/customizations/codeartifact/test_adapter_login.py
index 553d977647c2..13fd3970977e 100644
--- a/tests/unit/customizations/codeartifact/test_adapter_login.py
+++ b/tests/unit/customizations/codeartifact/test_adapter_login.py
@@ -1083,6 +1083,11 @@ def test_get_scope_without_prefix(self):
         scope = self.test_subject.get_scope(f'@{self.namespace}')
         self.assertEqual(scope, expected_value)
 
+    def test_get_scope_with_uppercase(self):
+        expected_value = '@Transform9'
+        scope = self.test_subject.get_scope('Transform9')
+        self.assertEqual(scope, expected_value)
+
     def test_get_commands(self):
         commands = self.test_subject.get_commands(
             self.endpoint, self.auth_token