diff --git a/content/en/docs/setup/install/virtual-machine/index.md b/content/en/docs/setup/install/virtual-machine/index.md
index 5844496223..b8946910d7 100644
--- a/content/en/docs/setup/install/virtual-machine/index.md
+++ b/content/en/docs/setup/install/virtual-machine/index.md
@@ -355,6 +355,8 @@ Run the following commands on the virtual machine you want to add to the Istio m
 
     {{< tab name="CentOS" category-value="centos" >}}
 
+    Note: only CentOS 8 is currently supported.
+
     {{< text bash >}}
     $ curl -LO https://storage.googleapis.com/istio-release/releases/{{< istio_full_version >}}/rpm/istio-sidecar.rpm
     $ sudo rpm -i istio-sidecar.rpm