diff --git a/mastodon-kanidm-sync.py b/mastodon-kanidm-sync.py
index 59fc199..e47f2f1 100644
--- a/mastodon-kanidm-sync.py
+++ b/mastodon-kanidm-sync.py
@@ -110,7 +110,7 @@ for uid in users:
     else:
         roleid = "NULL"
 
-    cur.execute("UPDATE users SET role_id = {roleid} WHERE id = {users[uid]};")
+    cur.execute(f"UPDATE users SET role_id = {roleid} WHERE id = {users[uid]};")
 
 cur.close()
 conn.close()