diff --git a/.github/workflows/systest.yml b/.github/workflows/systest.yml
index 493eb09972..a31d1744de 100644
--- a/.github/workflows/systest.yml
+++ b/.github/workflows/systest.yml
@@ -136,7 +136,7 @@ jobs:
           label: sanity
           storage: premium-rwo=10Gi
           node_selector: cloud.google.com/gke-nodepool=systemtest
-          size: 30
+          size: 20
           bootstrap: 4m
           level: ${{ inputs.log_level }}
           clusters: 4