diff --git a/swagger_spec_validator/common.py b/swagger_spec_validator/common.py
index 0144d41..25cefa0 100644
--- a/swagger_spec_validator/common.py
+++ b/swagger_spec_validator/common.py
@@ -62,8 +62,8 @@ def read_file(file_path: str) -> dict[str, Any]:
 
 @lru_cache()
 def read_resource_file(resource_path: str) -> tuple[dict[str, Any], str]:
-    ref = importlib.resources.files('swagger_spec_validator') / resource_path
-    with importlib.resources.as_file(ref) as path:
+    ref = files('swagger_spec_validator') / resource_path
+    with as_file(ref) as path:
         return read_file(path), path