diff --git a/conf/google.config b/conf/google.config
index 852da10..c912002 100644
--- a/conf/google.config
+++ b/conf/google.config
@@ -1,10 +1,17 @@
 params {
   executor = 'google-lifesciences'
   dataLocation = 'gs://lifebit-featured-datasets/pipelines/spammer-nf/input_files'
+
+  // Nextflow default values with correction so that all pulled from gcr.io
+  gls_copyImage = 'gcr.io/google.com/cloudsdktool/cloud-sdk:alpine'
+  gls_sshImage = 'gcr.io/cloud-genomics-pipelines/tools'
 }
 
 google {
-    lifeSciences.copyImage = 'gcr.io/google.com/cloudsdktool/cloud-sdk:alpine'
+    // both images must be hosted in gcr.io of using private ips (gls_usePrivateAddress true)
+    lifeSciences.copyImage = params.gls_copyImage
+    lifeSciences.sshImage = params.gls_sshImage
+
     lifeSciences.bootDiskSize = params.gls_bootDiskSize
     lifeSciences.preemptible = params.gls_preemptible
     zone = params.zone
diff --git a/nextflow.config b/nextflow.config
index 07cd3b7..8fe1846 100644
--- a/nextflow.config
+++ b/nextflow.config
@@ -40,6 +40,10 @@ params {
 	zone = 'us-east1-b'
 	network = 'default'
 	subnetwork = 'default'
+
+	// values defined in conf/google.config
+	gls_copyImage = false
+	gls_sshImage = false
 }
 
 // Do not update the order because the values set in params scope will not be overwritten