diff --git a/keystoneauth1/identity/v3/oidc.py b/keystoneauth1/identity/v3/oidc.py
index 39855463..24a58d97 100644
--- a/keystoneauth1/identity/v3/oidc.py
+++ b/keystoneauth1/identity/v3/oidc.py
@@ -326,7 +326,8 @@ class OidcPassword(_OidcBase):
         """
         payload = {'username': self.username,
                    'password': self.password,
-                   'scope': self.scope}
+                   'scope': self.scope,
+                   'client_id': self.client_id}
         return payload