diff --git a/notebooks/custom_color.ipynb b/notebooks/custom_color.ipynb
index 66071b62..a8374218 100644
--- a/notebooks/custom_color.ipynb
+++ b/notebooks/custom_color.ipynb
@@ -289,7 +289,7 @@
      },
      "3da2cbe4c62540008e58d7acf68b6510": {
       "model_module": "nglview-js-widgets",
-      "model_module_version": "2.6.5",
+      "model_module_version": "2.6.7",
       "model_name": "ColormakerRegistryModel",
       "state": {
        "_msg_ar": [
@@ -378,7 +378,7 @@
      },
      "511c1273765047d680a6bd87462ba735": {
       "model_module": "nglview-js-widgets",
-      "model_module_version": "2.6.5",
+      "model_module_version": "2.6.7",
       "model_name": "NGLModel",
       "state": {
        "_camera_orientation": [
@@ -682,7 +682,7 @@
      },
      "b8248632f3fe456db658a14aab12a243": {
       "model_module": "nglview-js-widgets",
-      "model_module_version": "2.6.5",
+      "model_module_version": "2.6.7",
       "model_name": "ColormakerRegistryModel",
       "state": {
        "_msg_ar": [
@@ -767,7 +767,7 @@
      },
      "df38e210cea04bdc9dca1000ab54ff46": {
       "model_module": "nglview-js-widgets",
-      "model_module_version": "2.6.5",
+      "model_module_version": "2.6.7",
       "model_name": "NGLModel",
       "state": {
        "_camera_orientation": [
@@ -971,7 +971,7 @@
      },
      "e224f0c54fee4a28829492967d34d504": {
       "model_module": "nglview-js-widgets",
-      "model_module_version": "2.6.5",
+      "model_module_version": "2.6.7",
       "model_name": "ColormakerRegistryModel",
       "state": {
        "_msg_ar": [