diff --git a/.github/workflows/deploy-gcp-tests.yml b/.github/workflows/deploy-gcp-tests.yml
index 263f7e1e8..fa24b48e3 100644
--- a/.github/workflows/deploy-gcp-tests.yml
+++ b/.github/workflows/deploy-gcp-tests.yml
@@ -159,11 +159,11 @@ jobs:
         id: create-instance
         run: |
           gcloud compute instances create-with-container "${{ inputs.test_id }}-${{ env.GITHUB_REF_SLUG_URL }}-${{ env.GITHUB_SHA_SHORT }}" \
-          --boot-disk-size 300GB \
+          --boot-disk-size 400GB \
           --boot-disk-type pd-ssd \
           --image-project=cos-cloud \
           --image-family=cos-stable \
-          --create-disk=name="${{ inputs.test_id }}-${{ env.GITHUB_SHA_SHORT }}",device-name="${{ inputs.test_id }}-${{ env.GITHUB_SHA_SHORT }}",size=300GB,type=pd-ssd \
+          --create-disk=name="${{ inputs.test_id }}-${{ env.GITHUB_SHA_SHORT }}",device-name="${{ inputs.test_id }}-${{ env.GITHUB_SHA_SHORT }}",size=400GB,type=pd-ssd \
           --container-image=gcr.io/google-containers/busybox \
           --machine-type ${{ vars.GCP_LARGE_MACHINE }} \
           --network-interface=subnet=${{ vars.GCP_SUBNETWORK }} \
@@ -403,11 +403,11 @@ jobs:
         id: create-instance
         run: |
           gcloud compute instances create-with-container "${{ inputs.test_id }}-${{ env.GITHUB_REF_SLUG_URL }}-${{ env.GITHUB_SHA_SHORT }}" \
-          --boot-disk-size 300GB \
+          --boot-disk-size 400GB \
           --boot-disk-type pd-ssd \
           --image-project=cos-cloud \
           --image-family=cos-stable \
-          --create-disk=image=${{ env.CACHED_DISK_NAME }},name="${{ inputs.test_id }}-${{ env.GITHUB_SHA_SHORT }}",device-name="${{ inputs.test_id }}-${{ env.GITHUB_SHA_SHORT }}",size=300GB,type=pd-ssd \
+          --create-disk=image=${{ env.CACHED_DISK_NAME }},name="${{ inputs.test_id }}-${{ env.GITHUB_SHA_SHORT }}",device-name="${{ inputs.test_id }}-${{ env.GITHUB_SHA_SHORT }}",size=400GB,type=pd-ssd \
           --container-image=gcr.io/google-containers/busybox \
           --machine-type ${{ vars.GCP_LARGE_MACHINE }} \
           --network-interface=subnet=${{ vars.GCP_SUBNETWORK }} \