diff --git a/discovery/people-v1.json b/discovery/people-v1.json
index cec2d6f143..da921fd642 100644
--- a/discovery/people-v1.json
+++ b/discovery/people-v1.json
@@ -868,6 +868,24 @@
               "format": "google-fieldmask",
               "location": "query",
               "type": "string"
+            },
+            "sources": {
+              "description": "Optional. A mask of what source types to return. Defaults to READ_SOURCE_TYPE_CONTACT if not set.",
+              "enum": [
+                "READ_SOURCE_TYPE_UNSPECIFIED",
+                "READ_SOURCE_TYPE_PROFILE",
+                "READ_SOURCE_TYPE_CONTACT",
+                "READ_SOURCE_TYPE_DOMAIN_CONTACT"
+              ],
+              "enumDescriptions": [
+                "Unspecified.",
+                "Returns SourceType.ACCOUNT, SourceType.DOMAIN_PROFILE, and SourceType.PROFILE.",
+                "Returns SourceType.CONTACT.",
+                "Returns SourceType.DOMAIN_CONTACT."
+              ],
+              "location": "query",
+              "repeated": true,
+              "type": "string"
             }
           },
           "path": "v1/people:searchContacts",
@@ -1136,7 +1154,7 @@
       }
     }
   },
-  "revision": "20210330",
+  "revision": "20210415",
   "rootUrl": "https://people.googleapis.com/",
   "schemas": {
     "Address": {
diff --git a/src/apis/people/v1.ts b/src/apis/people/v1.ts
index fc80dd0e1f..9c05181343 100644
--- a/src/apis/people/v1.ts
+++ b/src/apis/people/v1.ts
@@ -4648,6 +4648,8 @@ export namespace people_v1 {
      *     query: 'placeholder-value',
      *     // Required. A field mask to restrict which fields on each person are returned. Multiple fields can be specified by separating them with commas. Valid values are: * addresses * ageRanges * biographies * birthdays * calendarUrls * clientData * coverPhotos * emailAddresses * events * externalIds * genders * imClients * interests * locales * locations * memberships * metadata * miscKeywords * names * nicknames * occupations * organizations * phoneNumbers * photos * relations * sipAddresses * skills * urls * userDefined
      *     readMask: 'placeholder-value',
+     *     // Optional. A mask of what source types to return. Defaults to READ_SOURCE_TYPE_CONTACT if not set.
+     *     sources: 'placeholder-value',
      *   });
      *   console.log(res.data);
      *
@@ -5403,6 +5405,10 @@ export namespace people_v1 {
      * Required. A field mask to restrict which fields on each person are returned. Multiple fields can be specified by separating them with commas. Valid values are: * addresses * ageRanges * biographies * birthdays * calendarUrls * clientData * coverPhotos * emailAddresses * events * externalIds * genders * imClients * interests * locales * locations * memberships * metadata * miscKeywords * names * nicknames * occupations * organizations * phoneNumbers * photos * relations * sipAddresses * skills * urls * userDefined
      */
     readMask?: string;
+    /**
+     * Optional. A mask of what source types to return. Defaults to READ_SOURCE_TYPE_CONTACT if not set.
+     */
+    sources?: string[];
   }
   export interface Params$Resource$People$Searchdirectorypeople
     extends StandardParameters {