diff --git a/notebooks/examples/openzh-covid-19-example.ipynb b/notebooks/examples/openzh-covid-19-example.ipynb
index 63e2744b90b51a2502831c0e83471e329429f002..d1ee29f542245bbfb97ce6ae96396a3c34c26156 100644
--- a/notebooks/examples/openzh-covid-19-example.ipynb
+++ b/notebooks/examples/openzh-covid-19-example.ipynb
@@ -560,6 +560,7 @@
   }
  ],
  "metadata": {
+  "hide_input": true,
   "kernelspec": {
    "display_name": "Python 3",
    "language": "python",
@@ -575,7 +576,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.3"
+   "version": "3.7.7"
   }
  },
  "nbformat": 4,