diff --git a/pubsublite/integration_test.go b/pubsublite/integration_test.go
index 3568f591819..7a5e1a3a50d 100644
--- a/pubsublite/integration_test.go
+++ b/pubsublite/integration_test.go
@@ -16,6 +16,7 @@ package pubsublite
 import (
 	"context"
 	"math/rand"
+	"strconv"
 	"testing"
 	"time"
 
@@ -50,6 +51,10 @@ func initIntegrationTest(t *testing.T) {
 	if testutil.ProjID() == "" {
 		t.Skip("Integration tests skipped. See CONTRIBUTING.md for details")
 	}
+	// The Pub/Sub Lite server will accept project ID or number by EOQ4, 2020.
+	if _, err := strconv.ParseInt(testutil.ProjID(), 10, 64); err != nil {
+		t.Skip("Integration tests skipped. Only project number currently supported.")
+	}
 	rng = testutil.NewRand(time.Now())
 }