diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 ## Instructions for running in AWS
 
-1. Launch an instance with the [Deep Learning Base GPU AMI](https://aws.amazon.com/releasenotes/aws-deep-learning-base-gpu-ami-ubuntu-20-04/)
+1. Launch an instance with the [Deep Learning Base GPU AMI](https://aws.amazon.com/releasenotes/aws-deep-learning-base-gpu-ami-ubuntu-20-04/). Note that this AMI currently only supports P5, P4de, P4d, P3, G5, G3, and G4dn instances.
 
 2. Log into the instance and configure GPUs to run inside Docker containers
    ```
@@ -46,4 +46,4 @@
    docker stop autotune
    ```
 
-8. All logs are stored in the `save_dir` argument passed into (6)
\ No newline at end of file
+8. All logs are stored in the `save_dir` argument passed into (6)