diff --git a/.github/workflows/run-k8s-tests-on-aks.yaml b/.github/workflows/run-k8s-tests-on-aks.yaml
index 71ec7eb39b..efe90a37ef 100644
--- a/.github/workflows/run-k8s-tests-on-aks.yaml
+++ b/.github/workflows/run-k8s-tests-on-aks.yaml
@@ -35,6 +35,8 @@ jobs:
       - name: Download Azure CLI
         run: |
           curl -sL https://aka.ms/InstallAzureCLIDeb | sudo bash
+          # The aks-preview extension is required while the Mariner Kata host is in preview.
+          az extension add --name aks-preview
 
       - name: Log into the Azure account
         run: |