diff --git a/.github/workflows/build-installer-iso.yml b/.github/workflows/build-installer-iso.yml
index 2701d08..594f768 100644
--- a/.github/workflows/build-installer-iso.yml
+++ b/.github/workflows/build-installer-iso.yml
@@ -36,6 +36,7 @@ jobs:
             -v /var/lib/containers/storage:/var/lib/containers/storage \
             quay.io/centos-bootc/bootc-image-builder:latest \
             --type anaconda-iso \
+            --rootfs btrfs
             --output /output/ \
             ghcr.io/humocs-man/fluffy-pancake:stable