diff --git a/ci-operator/config/openshift/microshift/openshift-microshift-main.yaml b/ci-operator/config/openshift/microshift/openshift-microshift-main.yaml
index 9ff2e73979833..e888d6e762460 100644
--- a/ci-operator/config/openshift/microshift/openshift-microshift-main.yaml
+++ b/ci-operator/config/openshift/microshift/openshift-microshift-main.yaml
@@ -29,7 +29,9 @@ images:
           setcap cap_setuid+ep /usr/bin/newuidmap && \
           setcap cap_setgid+ep /usr/bin/newgidmap && \
           touch /etc/subgid /etc/subuid && \
-          chmod g=u /etc/subuid /etc/subgid
+          chmod g=u /etc/subuid /etc/subgid && \
+          chmod g=u /etc/passwd /etc/group
+      ENV BUILDAH_ISOLATION=chroot
       USER 1000
     inputs:
       src: