diff --git a/docs/courses/hello-world/1.1-running-the-demo.md b/docs/courses/hello-world/1.1-running-the-demo.md
index db7f33a..641c8be 100644
--- a/docs/courses/hello-world/1.1-running-the-demo.md
+++ b/docs/courses/hello-world/1.1-running-the-demo.md
@@ -30,7 +30,7 @@ the self-driving-lab-demo Python package.
 ✅ Follow the [video tutorial](https://youtu.be/D54yfxRSY6s) below. Consider printing a hardcopy of the [Build Instructions manuscript](https://doi.org/10.1016/j.xpro.2023.102329) or opening it in a separate tab.
 
 ```{warning}
-You must copy [the `hivemq-com-chain.der` file](https://raw.githubusercontent.com/sparks-baird/self-driving-lab-demo/main/src/public_mqtt_sdl_demo/hivemq-com-chain.der) to the Pico W for it to work with recent version of the `self-driving-lab-demo` package. If you swapped out the credentials with your own broker information (required for the assignment), you must [generate your own `hivemq-com-chain.der` file](https://colab.research.google.com/github/sparks-baird/self-driving-lab-demo/blob/main/notebooks/7.2.1-hivemq-openssl-certificate.ipynb) due to a recent change in HiveMQ's security procedures (as of 2024-07-03).
+You must copy [the `hivemq-com-chain.der` file](https://raw.githubusercontent.com/sparks-baird/self-driving-lab-demo/main/src/public_mqtt_sdl_demo/hivemq-com-chain.der) to the Pico W for it to work with recent version of the `self-driving-lab-demo` package. A non-expiring, "root" certificate is contained in `sdl_demo.zip` packages releases v0.8.13 and beyond [[colab](https://colab.research.google.com/gist/sgbaird/5ddef425e8d4aae454a69fbce8654faf/hivemq-root-cert.ipynb)]. You can also [generate a `hivemq-com-chain.der` certificate specific to your HiveMQ instance](https://colab.research.google.com/github/sparks-baird/self-driving-lab-demo/blob/main/notebooks/7.2.1-hivemq-openssl-certificate.ipynb). We recommend using the non-expiring, root certificate, which is applicable for all HiveMQ instances.
 ```
 
 <iframe width="560" height="315" src="https://www.youtube.com/embed/D54yfxRSY6s?si=xB5bo7bxWry02q5Q" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>
diff --git a/docs/courses/hello-world/mqtt-warning.md b/docs/courses/hello-world/mqtt-warning.md
index e2c36c8..e841bab 100644
--- a/docs/courses/hello-world/mqtt-warning.md
+++ b/docs/courses/hello-world/mqtt-warning.md
@@ -1,3 +1,5 @@
 ```{warning}
-Recently, HiveMQ Cloud changed such that `hivemq-com-chain.der` (a Certificate Authority (CA) file) is not transferrable across different broker instances. The [latest `hivemq-com-chain.der` file](https://raw.githubusercontent.com/sparks-baird/self-driving-lab-demo/main/src/public_mqtt_sdl_demo/hivemq-com-chain.der) from [`self-driving-lab-demo`](https://github.com/sparks-baird/self-driving-lab-demo) will be hard-coded to the `self-driving-lab-demo` public test credentials (i.e., what is used in Module 1 - Running the Demo), so the *tutorials* should run without issue as long as you are using that file. However, the *assignment* requires you to have your own HiveMQ Cloud broker instance, so you will need to [generate a `hivemq-com-chain.der` file specific to your instance](https://colab.research.google.com/github/sparks-baird/self-driving-lab-demo/blob/main/notebooks/7.2.1-hivemq-openssl-certificate.ipynb) and upload it to your microcontroller in place of the default one.
+Recently, HiveMQ Cloud changed such that `hivemq-com-chain.der` (a Certificate Authority (CA) file) is not transferrable across different broker instances. However, a **non-expiring certificate solution** is available using the intermediate certificate (ISRG Root X1) instead of the server-specific certificate.
+
+A non-expiring, "root" certificate is contained in `sdl_demo.zip` packages [releases](https://github.com/sparks-baird/self-driving-lab-demo/releases) v0.8.13 and beyond [[colab](https://colab.research.google.com/gist/sgbaird/5ddef425e8d4aae454a69fbce8654faf/hivemq-root-cert.ipynb)]. You can also [generate a `hivemq-com-chain.der` certificate specific to your HiveMQ instance](https://colab.research.google.com/github/sparks-baird/self-driving-lab-demo/blob/main/notebooks/7.2.1-hivemq-openssl-certificate.ipynb). We recommend using the non-expiring, root certificate, which is applicable for all HiveMQ instances.
 ```