diff --git a/invenio_accounts/datastore.py b/invenio_accounts/datastore.py
index 95e0b6e1..387bcc1d 100644
--- a/invenio_accounts/datastore.py
+++ b/invenio_accounts/datastore.py
@@ -2,6 +2,7 @@
 #
 # This file is part of Invenio.
 # Copyright (C) 2015-2024 CERN.
+# Copyright (C) 2024      KTH Royal Institute of Technology.
 #
 # Invenio is free software; you can redistribute it and/or modify it
 # under the terms of the MIT License; see LICENSE file for more details.
@@ -33,6 +34,11 @@ def verify_user(self, user):
             user.confirmed_at = now
         return True
 
+    def unverify_user(self, user):
+        """Unverify a user."""
+        user.verified_at = None
+        return True
+
     def block_user(self, user):
         """Verify a user."""
         now = datetime.utcnow()
diff --git a/tests/test_sessions.py b/tests/test_sessions.py
index cce4449a..bcbca251 100644
--- a/tests/test_sessions.py
+++ b/tests/test_sessions.py
@@ -2,6 +2,7 @@
 #
 # This file is part of Invenio.
 # Copyright (C) 2015-2018 CERN.
+# Copyright (C) 2022      KTH Royal Institute of Technology.
 #
 # Invenio is free software; you can redistribute it and/or modify it
 # under the terms of the MIT License; see LICENSE file for more details.
@@ -288,3 +289,21 @@ def test_session_ip_no_country(app, users):
         [session] = SessionActivity.query.all()
         assert session.country is None
         assert session.ip == "139.191.247.1"
+
+
+def test_unverify_user(app):
+    """Test unverifying a user."""
+    with app.app_context():
+        user = testutils.create_test_user(
+            "verified@test.org",
+            verified_at=datetime.datetime.now(datetime.timezone.utc),
+        )
+
+        # Ensure the user starts off as verified
+        assert user.verified_at is not None
+
+        _datastore.unverify_user(user)
+        db.session.commit()
+
+        # Ensure the user is no longer verified
+        assert user.verified_at is None