diff --git a/commands/update_assignees.py b/commands/update_assignees.py
index 5cba0da..be51c61 100644
--- a/commands/update_assignees.py
+++ b/commands/update_assignees.py
@@ -10,4 +10,4 @@ class UpdateAssignees(BaseCommand):
         iid = get_mrs_for_branch(self.branch)[0]["iid"]
 
         print(f"{login} @ {self.branch} : {iid}")
-        set_assignees(iid, ["39", "1772"])
\ No newline at end of file
+        set_assignees(iid, [39, 1772])
diff --git a/gitlab.py b/gitlab.py
index e4237f2..255cae8 100644
--- a/gitlab.py
+++ b/gitlab.py
@@ -58,7 +58,7 @@ def merge_mr(iid):
 
 
 def set_assignees(iid, assignee_ids):
-    params = {"assignee_ids": assignee_ids}
+    params = {"assignee_ids[]": assignee_ids}
     headers = {"Private-Token": TOKEN}
 
     with requests.put(