diff --git a/ci/testnet-manager.sh b/ci/testnet-manager.sh
index 986f4a9bb7..9323e2489c 100755
--- a/ci/testnet-manager.sh
+++ b/ci/testnet-manager.sh
@@ -170,7 +170,7 @@ sanity() {
       export NO_LEDGER_VERIFY=1
       export NO_VALIDATOR_SANITY=1
       #ci/testnet-sanity.sh perf-testnet-solana-com ec2 us-east-1a
-      ci/testnet-sanity.sh perf-testnet-solana-com gce us-west1-a
+      ci/testnet-sanity.sh perf-testnet-solana-com gce us-west1-b
     )
     ;;
   *)
@@ -264,7 +264,7 @@ start() {
       set -ex
       export NO_LEDGER_VERIFY=1
       export NO_VALIDATOR_SANITY=1
-      ci/testnet-deploy.sh perf-testnet-solana-com gce us-west1-a \
+      ci/testnet-deploy.sh perf-testnet-solana-com gce us-west1-b \
         -G "n1-standard-16 --accelerator count=2,type=nvidia-tesla-v100" \
         -t "$CHANNEL_OR_TAG" -c 2 \
         -b \