diff --git a/petale/management/commands/clean.py b/petale/management/commands/clean.py
index 4b1c9a2..f89e38c 100644
--- a/petale/management/commands/clean.py
+++ b/petale/management/commands/clean.py
@@ -33,7 +33,7 @@ def check_unknown_cuts(uuids, creds):
         raise ValueError('PETALE_AUTHENTIC SETTINGS improperly defined')
 
     url = urljoin(authentic_url, 'api/users/synchronization/')
-    response = requests.post(url, json={"known_uuids": list(uuids)}, auth=creds, verify=False)
+    response = requests.post(url, json={"known_uuids": list(uuids)}, auth=creds)
     response.raise_for_status()
     data = response.json()
     return data.get("unknown_uuids") or []