diff --git a/examples/google_colab/pysdk_google_hello_world.ipynb b/examples/google_colab/pysdk_google_hello_world.ipynb
index ec8cfda..2ebbee5 100644
--- a/examples/google_colab/pysdk_google_hello_world.ipynb
+++ b/examples/google_colab/pysdk_google_hello_world.ipynb
@@ -85,9 +85,9 @@
     "\n",
     "# load object detection AI model\n",
     "model = dg.load_model(\n",
-    "    model_name=\"yolov8n_relu6_coco--640x640_quant_tflite_edgetpu_1\",\n",
+    "    model_name=\"yolov8n_relu6_coco--512x512_quant_tflite_edgetpu_1\",\n",
     "    inference_host_address=\"@cloud\",\n",
-    "    zoo_url='degirum/models_tflite',\n",
+    "    zoo_url='degirum/google',\n",
     "    token=degirum_tools.get_token(),\n",
     ")\n",
     "\n",
@@ -123,12 +123,12 @@
     "# Define configurations\n",
     "model_configurations = {\n",
     "    \"Google\": {\n",
-    "        \"zoo_url\": \"degirum/models_tflite\",\n",
+    "        \"zoo_url\": \"degirum/google\",\n",
     "        \"model_names\": {\n",
     "            \"classification\": [\"yolov8s_silu_imagenet--224x224_quant_tflite_edgetpu_1\"],\n",
-    "            \"detection\": [\"yolov8n_relu6_coco--640x640_quant_tflite_edgetpu_1\"],\n",
+    "            \"detection\": [\"yolov8n_relu6_coco--512x512_quant_tflite_edgetpu_1\"],\n",
     "            \"keypoint_detection\": [\"yolov8n_relu6_widerface_kpts--640x640_quant_tflite_edgetpu_1\"],\n",
-    "            \"segmentation\": [\"yolov8n_relu6_coco_seg--640x640_quant_tflite_edgetpu_1\"],\n",
+    "            \"segmentation\": [\"yolov8n_relu6_coco_seg--512x512_quant_tflite_edgetpu_1\"],\n",
     "        },\n",
     "    },\n",
     "}\n",
@@ -210,8 +210,8 @@
     "import degirum as dg, degirum_tools\n",
     "\n",
     "hw_location = \"@cloud\" # \"@cloud\" for cloud inference, \"@local\" for local inference, or IP address for AI server inference\n",
-    "model_zoo_url = \"degirum/models_tflite\"\n",
-    "model_name = \"yolov8n_relu6_coco--640x640_quant_tflite_edgetpu_1\"\n",
+    "model_zoo_url = \"degirum/google\"\n",
+    "model_name = \"yolov8n_relu6_coco--512x512_quant_tflite_edgetpu_1\"\n",
     "image_source = \"https://raw.githubusercontent.com/DeGirum/PySDKExamples/main/images/Mask1.jpg\"\n",
     "\n",
     "# load object detection AI model\n",