diff --git a/generation/new_client/README.md b/generation/new_client/README.md
index 390dd1f5f22b..f216d0294d96 100644
--- a/generation/new_client/README.md
+++ b/generation/new_client/README.md
@@ -172,17 +172,23 @@ Example: `https://cloud.google.com/alloydb/docs`
 
 ### REST Docs
 
-The corresponding value in the Cloud Drop page is `documentation_uri`.
+The corresponding value in the Cloud Drop page is `rest_reference_documentation_uri`.
 The value must starts with "https://".
 
-Example: `https://cloud.google.com/alloydb/docs`
+Example: `https://cloud.google.com/alloydb/docs/reference/rest`
+
+If they exist, add them as a flag to the python command below like:
+`--rest-docs="https://cloud.google.com/alloydb/docs/reference/rest" \`
 
 ### RPC Docs
 
-The corresponding value in the Cloud Drop page is `documentation_uri`.
+The corresponding value in the Cloud Drop page is `proto_reference_documentation_uri`.
 The value must starts with "https://".
 
-Example: `https://cloud.google.com/alloydb/docs`
+Example: `https://cloud.google.com/speech-to-text/docs/reference/rpc`
+
+If they exist, add them as a flag to the python command below like:
+`--rpc-docs="https://cloud.google.com/speech-to-text/docs/reference/rpc" \`
 
 ### API description
 
diff --git a/generation/new_client/new-client.py b/generation/new_client/new-client.py
index 454451b62912..452c99605732 100644
--- a/generation/new_client/new-client.py
+++ b/generation/new_client/new-client.py
@@ -150,6 +150,16 @@ def main(ctx):
     help="The URL of the repository that has generated Java code from proto "
          "service definition"
 )
+@click.option(
+    "--rest-docs",
+    type=str,
+    help="If it exists, link to the REST Documentation for a service"
+)
+@click.option(
+    "--rpc-docs",
+    type=str,
+    help="If it exists, link to the RPC Documentation for a service"
+)
 def generate(
     api_shortname,
     name_pretty,
@@ -168,6 +178,8 @@ def generate(
     owlbot_image,
     library_type,
     googleapis_gen_url,
+    rest_docs,
+    rpc_docs,
 ):
     cloud_prefix = "cloud-" if cloud_api else ""
 
@@ -211,6 +223,11 @@ def generate(
     if requires_billing:
         repo_metadata["requires_billing"] = True
 
+    if rest_docs:
+        repo_metadata["rest_documentation"] = rest_docs
+
+    if rpc_docs:
+        repo_metadata["rpc_documentation"] = rpc_docs
     # Initialize workdir
     workdir = Path(f"{sys.path[0]}/../../java-{output_name}").resolve()
     if os.path.isdir(workdir):