diff --git a/How it works - GeoPandas spatial joins.ipynb b/How it works - GeoPandas spatial joins.ipynb
index 21a2001..52f242d 100644
--- a/How it works - GeoPandas spatial joins.ipynb	
+++ b/How it works - GeoPandas spatial joins.ipynb	
@@ -321,7 +321,7 @@
     }
    ],
    "source": [
-    "za_with_city = gpd.sjoin(za, caps_points, how=\"inner\", op='intersects')\n",
+    "za_with_city = gpd.sjoin(za, caps_points, how=\"inner\", predicate='intersects')\n",
     "ax = za.plot(figsize = (10, 7))\n",
     "za_with_city.plot(ax = ax, color = \"red\")"
    ]