diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4f9fac5..35f9682 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -65,7 +65,8 @@ jobs:
       - name: typecheck — mypy
         run: mypy src/roar_sdk/ --ignore-missing-imports
         working-directory: python
-      - run: pytest tests/conformance/ -v
+      - name: conformance tests
+        run: pytest tests/test_conformance*.py -v
         working-directory: .
       - name: cross-SDK interop tests
         run: pytest tests/test_cross_sdk_interop.py -v
diff --git a/python/src/roar_sdk/_compat.py b/python/src/roar_sdk/_compat.py
index d987f74..e10a030 100644
--- a/python/src/roar_sdk/_compat.py
+++ b/python/src/roar_sdk/_compat.py
@@ -1,11 +1,10 @@
-# Python 3.10 compatibility shim for StrEnum (added in 3.11)
-try:
-    from enum import StrEnum
-except ImportError:
-    from enum import Enum
+"""Compatibility helpers for Python version differences."""
 
-    class StrEnum(str, Enum):  # type: ignore[no-redef]
-        """Backport of Python 3.11 StrEnum for Python 3.10."""
+from enum import Enum
 
-        def __str__(self) -> str:
-            return self.value
+
+class StrEnum(str, Enum):
+    """Lightweight StrEnum backport for consistent typing on Python 3.10+."""
+
+    def __str__(self) -> str:
+        return self.value