diff --git a/packages/aws-cdk-lib/aws-lambda/lib/runtime.ts b/packages/aws-cdk-lib/aws-lambda/lib/runtime.ts
index 3c4a1572588be..5abc99474a5e4 100644
--- a/packages/aws-cdk-lib/aws-lambda/lib/runtime.ts
+++ b/packages/aws-cdk-lib/aws-lambda/lib/runtime.ts
@@ -249,6 +249,7 @@ export class Runtime {
 
   /**
    * The custom provided runtime (provided)
+   * @deprecated Legacy runtime no longer supported by AWS Lambda. Migrate to the latest provided.al2 runtime.
    */
   public static readonly PROVIDED = new Runtime('provided', RuntimeFamily.OTHER);