diff --git a/semantic-conventions/dev-requirements.txt b/semantic-conventions/dev-requirements.txt
index efc47b8a..bb5fe10c 100644
--- a/semantic-conventions/dev-requirements.txt
+++ b/semantic-conventions/dev-requirements.txt
@@ -1,6 +1,6 @@
 black==24.2.0
-mypy==0.910
+mypy==1.8.0
 pytest==8.1.1
 flake8==7.0.0
 pylint==3.1.0
-isort==5.13.2
\ No newline at end of file
+isort==5.13.2
diff --git a/semantic-conventions/src/opentelemetry/semconv/model/constraints.py b/semantic-conventions/src/opentelemetry/semconv/model/constraints.py
index 2e44119c..9acf8c32 100644
--- a/semantic-conventions/src/opentelemetry/semconv/model/constraints.py
+++ b/semantic-conventions/src/opentelemetry/semconv/model/constraints.py
@@ -13,7 +13,7 @@
 #   limitations under the License.
 
 from dataclasses import dataclass, replace
-from typing import List, Tuple
+from typing import Tuple
 
 from ruamel.yaml.comments import CommentedSeq
 
@@ -52,7 +52,7 @@ def __eq__(self, other):
     def __hash__(self):
         return hash(self.choice_list_ids)
 
-    def add_attributes(self, attr: List[SemanticAttribute]):
+    def add_attributes(self, attr: Tuple[SemanticAttribute]):
         self.choice_list_attributes += (attr,)
 
     def inherit_anyof(self):