diff --git a/github/issues.go b/github/issues.go
index 47537544a42..1e0991ce4ff 100644
--- a/github/issues.go
+++ b/github/issues.go
@@ -228,7 +228,7 @@ func (s *IssuesService) ListByRepo(ctx context.Context, owner string, repo strin
 	}
 
 	// TODO: remove custom Accept headers when APIs fully launch.
-	acceptHeaders := []string{mediaTypeReactionsPreview, mediaTypeLabelDescriptionSearchPreview, mediaTypeLockReasonPreview}
+	acceptHeaders := []string{mediaTypeReactionsPreview, mediaTypeLabelDescriptionSearchPreview, mediaTypeIntegrationPreview}
 	req.Header.Set("Accept", strings.Join(acceptHeaders, ", "))
 
 	var issues []*Issue
diff --git a/github/issues_test.go b/github/issues_test.go
index d6fe9f3f919..22190a028b1 100644
--- a/github/issues_test.go
+++ b/github/issues_test.go
@@ -109,7 +109,7 @@ func TestIssuesService_ListByRepo(t *testing.T) {
 	client, mux, _, teardown := setup()
 	defer teardown()
 
-	acceptHeaders := []string{mediaTypeReactionsPreview, mediaTypeLabelDescriptionSearchPreview, mediaTypeLockReasonPreview}
+	acceptHeaders := []string{mediaTypeReactionsPreview, mediaTypeLabelDescriptionSearchPreview, mediaTypeIntegrationPreview}
 	mux.HandleFunc("/repos/o/r/issues", func(w http.ResponseWriter, r *http.Request) {
 		testMethod(t, r, "GET")
 		testHeader(t, r, "Accept", strings.Join(acceptHeaders, ", "))