diff --git a/github/repos.go b/github/repos.go
index 3439e69..ffefce9 100644
--- a/github/repos.go
+++ b/github/repos.go
@@ -110,16 +110,33 @@ func (r Repository) String() string {
 // RepositoryListOptions specifies the optional parameters to the
 // RepositoriesService.List method.
 type RepositoryListOptions struct {
-	// Type of repositories to list.  Possible values are: all, owner, public,
-	// private, member.  Default is "all".
+	// Visibility of repositories to list. Can be one of all, public, or private.
+	// Default: all
+	Visibility string `url:"visibility,omitempty"`
+
+	// List repos of given affiliation[s].
+	// Comma-separated list of values. Can include:
+	// * owner: Repositories that are owned by the authenticated user.
+	// * collaborator: Repositories that the user has been added to as a
+	//   collaborator.
+	// * organization_member: Repositories that the user has access to through
+	//   being a member of an organization. This includes every repository on
+	//   every team that the user is on.
+	// Default: owner,collaborator,organization_member
+	Affiliation string `url:"affiliation,omitempty"`
+
+	// Type of repositories to list.
+	// Can be one of all, owner, public, private, member. Default: all
+	// Will cause a 422 error if used in the same request as visibility or
+	// affiliation.
 	Type string `url:"type,omitempty"`
 
-	// How to sort the repository list.  Possible values are: created, updated,
-	// pushed, full_name.  Default is "full_name".
+	// How to sort the repository list. Can be one of created, updated, pushed,
+	// full_name. Default: full_name
 	Sort string `url:"sort,omitempty"`
 
-	// Direction in which to sort repositories.  Possible values are: asc, desc.
-	// Default is "asc" when sort is "full_name", otherwise default is "desc".
+	// Direction in which to sort repositories. Can be one of asc or desc.
+	// Default: when using full_name: asc; otherwise desc
 	Direction string `url:"direction,omitempty"`
 
 	ListOptions
diff --git a/github/repos_test.go b/github/repos_test.go
index 8725c99..9f738f9 100644
--- a/github/repos_test.go
+++ b/github/repos_test.go
@@ -42,15 +42,49 @@ func TestRepositoriesService_List_specifiedUser(t *testing.T) {
 		testMethod(t, r, "GET")
 		testHeader(t, r, "Accept", mediaTypeLicensesPreview)
 		testFormValues(t, r, values{
-			"type":      "owner",
-			"sort":      "created",
-			"direction": "asc",
-			"page":      "2",
+			"visibility":  "public",
+			"affiliation": "owner,collaborator",
+			"sort":        "created",
+			"direction":   "asc",
+			"page":        "2",
 		})
 		fmt.Fprint(w, `[{"id":1}]`)
 	})
 
-	opt := &RepositoryListOptions{"owner", "created", "asc", ListOptions{Page: 2}}
+	opt := &RepositoryListOptions{
+		Visibility:  "public",
+		Affiliation: "owner,collaborator",
+		Sort:        "created",
+		Direction:   "asc",
+		ListOptions: ListOptions{Page: 2},
+	}
+	repos, _, err := client.Repositories.List("u", opt)
+	if err != nil {
+		t.Errorf("Repositories.List returned error: %v", err)
+	}
+
+	want := []*Repository{{ID: Int(1)}}
+	if !reflect.DeepEqual(repos, want) {
+		t.Errorf("Repositories.List returned %+v, want %+v", repos, want)
+	}
+}
+
+func TestRepositoriesService_List_specifiedUser_type(t *testing.T) {
+	setup()
+	defer teardown()
+
+	mux.HandleFunc("/users/u/repos", func(w http.ResponseWriter, r *http.Request) {
+		testMethod(t, r, "GET")
+		testHeader(t, r, "Accept", mediaTypeLicensesPreview)
+		testFormValues(t, r, values{
+			"type": "owner",
+		})
+		fmt.Fprint(w, `[{"id":1}]`)
+	})
+
+	opt := &RepositoryListOptions{
+		Type: "owner",
+	}
 	repos, _, err := client.Repositories.List("u", opt)
 	if err != nil {
 		t.Errorf("Repositories.List returned error: %v", err)