diff --git a/antarest/study/common/studystorage.py b/antarest/study/common/studystorage.py
index c804c864e9..cdc5aa22da 100644
--- a/antarest/study/common/studystorage.py
+++ b/antarest/study/common/studystorage.py
@@ -271,3 +271,7 @@ def unarchive_study_output(
         self, study: T, output_id: str, keep_src_zip: bool
     ) -> bool:
         raise NotImplementedError()
+
+    @abstractmethod
+    def unarchive(self, study: T) -> None:
+        raise NotImplementedError()