diff --git a/.generator/schemas/v1/openapi.yaml b/.generator/schemas/v1/openapi.yaml
index 0e0b198a8d7..291fd75a09d 100644
--- a/.generator/schemas/v1/openapi.yaml
+++ b/.generator/schemas/v1/openapi.yaml
@@ -32533,7 +32533,11 @@ paths:
         - timeseries_query
   /api/v1/search:
     get:
-      description: Search for metrics from the last 24 hours in Datadog.
+      deprecated: true
+      description: '**Note**: This endpoint is deprecated. Use `/api/v2/metrics` instead.
+
+
+        Search for metrics from the last 24 hours in Datadog.'
       operationId: ListMetrics
       parameters:
       - description: Query string to search metrics upon. Can optionally be prefixed
diff --git a/lib/datadog_api_client/v1/api/metrics_api.rb b/lib/datadog_api_client/v1/api/metrics_api.rb
index 78150133633..c9f24365a74 100644
--- a/lib/datadog_api_client/v1/api/metrics_api.rb
+++ b/lib/datadog_api_client/v1/api/metrics_api.rb
@@ -168,12 +168,17 @@ def list_metrics(q, opts = {})
 
     # Search metrics.
     #
+    # **Note**: This endpoint is deprecated. Use `/api/v2/metrics` instead.
+    #
     # Search for metrics from the last 24 hours in Datadog.
     #
+    # @deprecated This API is deprecated.
+    #
     # @param q [String] Query string to search metrics upon. Can optionally be prefixed with `metrics:`.
     # @param opts [Hash] the optional parameters
     # @return [Array<(MetricSearchResponse, Integer, Hash)>] MetricSearchResponse data, response status code and response headers
     def list_metrics_with_http_info(q, opts = {})
+      warn "[DEPRECATION] `ListMetrics` is deprecated."
 
       if @api_client.config.debugging
         @api_client.config.logger.debug 'Calling API: MetricsAPI.list_metrics ...'