diff --git a/tools/sgcloudspanner/emulator.go b/tools/sgcloudspanner/emulator.go
index 041cb9fe..fa046d2d 100644
--- a/tools/sgcloudspanner/emulator.go
+++ b/tools/sgcloudspanner/emulator.go
@@ -20,8 +20,8 @@ import (
 const (
 	cloudbuildNetwork = "cloudbuild"
 	url               = "gcr.io/cloud-spanner-emulator/emulator"
-	version           = "sha256:5d905e581977bd3d543742e74ddb75c0ba65517cf19742089ae1be45b7b8aa49" // 1.5.13
-	image             = url + "@" + version
+	version           = "1.5.17"
+	image             = url + ":" + version
 )
 
 // RunEmulator runs the Cloud Spanner emulator in Docker.