diff --git a/repo2docker/contentproviders/dataverse.py b/repo2docker/contentproviders/dataverse.py
index 5797aacc..220f147e 100644
--- a/repo2docker/contentproviders/dataverse.py
+++ b/repo2docker/contentproviders/dataverse.py
@@ -187,4 +187,4 @@ class Dataverse(DoiProvider):
     @property
     def content_id(self):
         """The Dataverse persistent identifier."""
-        return self.url
+        return hashlib.sha256(self.url.encode()).hexdigest()