diff --git a/poetry.lock b/poetry.lock
index 5cc4871..628c963 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -940,4 +940,4 @@ cffi = ["cffi (>=1.17,<2.0) ; platform_python_implementation != \"PyPy\" and pyt
 [metadata]
 lock-version = "2.1"
 python-versions = "^3.10"
-content-hash = "062583db7ebaf0380273033b41ada3514af90a26b06d7ca44a24d92320883586"
+content-hash = "3c3f0f5ca716db37fdddecde7ea969bc8a21e7ee3576798f45a13cda003117de"
diff --git a/pyproject.toml b/pyproject.toml
index 2d54c20..7ecb005 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,6 +16,7 @@ asam-qc-baselib = {git = "https://github.com/asam-ev/qc-baselib-py.git", rev = "
 osi-python = {git = "https://github.com/OpenSimulationInterface/osi-python.git", rev = "main"}
 pyyaml = "^6.0.0"
 iso3166 = "^2.1.1"
+protobuf = ">=6.30.2"
 
 [tool.poetry.group.dev.dependencies]
 pytest = "^8.2.2"
diff --git a/qc_ositrace/checks/osirules/osirules_checker.py b/qc_ositrace/checks/osirules/osirules_checker.py
index 208dafb..cae05fb 100644
--- a/qc_ositrace/checks/osirules/osirules_checker.py
+++ b/qc_ositrace/checks/osirules/osirules_checker.py
@@ -10,6 +10,7 @@
 )
 
 from osi3trace.osi_trace import OSITrace
+import google.protobuf.descriptor
 import google.protobuf.message
 
 from importlib import resources as impresources
@@ -125,6 +126,17 @@ def register_issue(
     )
 
 
+if hasattr(google.protobuf.descriptor.FieldDescriptor, "is_repeated"):
+
+    def field_descriptor_is_repeated(field_descriptor) -> bool:
+        return bool(field_descriptor.is_repeated)
+
+else:
+
+    def field_descriptor_is_repeated(field_descriptor) -> bool:
+        return field_descriptor.label == field_descriptor.LABEL_REPEATED
+
+
 def evaluate_rule_condition(
     message: google.protobuf.message.Message, field_name: str, rule: dict
 ) -> bool:
@@ -134,7 +146,7 @@ def evaluate_rule_condition(
             f"Field '{field_name}' not found in message '{message.DESCRIPTOR.full_name}'. Rule evaluation skipped."
         )
         return False
-    if field_descriptor.label == field_descriptor.LABEL_REPEATED:
+    if field_descriptor_is_repeated(field_descriptor):
         values = getattr(message, field_name)
     else:
         values = [getattr(message, field_name)] if message.HasField(field_name) else []
@@ -198,7 +210,7 @@ def check_message_against_rules(
                 f"Field '{field_name}' not found in message '{message.DESCRIPTOR.full_name}'. Skipping rules check."
             )
             continue
-        if field_descriptor.label == field_descriptor.LABEL_REPEATED:
+        if field_descriptor_is_repeated(field_descriptor):
             has_field = True
             values = getattr(message, field_name)
         else:
@@ -264,7 +276,7 @@ def check_message_against_rules(
 
     # Process other rules for each set field
     for field, value in message.ListFields():
-        values = value if field.label == field.LABEL_REPEATED else [value]
+        values = value if field_descriptor_is_repeated(field) else [value]
         for rule_uid, rule in field_rules.get(field.name, []):
             if "is_greater_than" in rule and not all(
                 [value > rule["is_greater_than"] for value in values]