diff --git a/tests/krb5/Dockerfile.kerberos b/tests/krb5/Dockerfile.kerberos
index 61b2fa3..0e2428a 100644
--- a/tests/krb5/Dockerfile.kerberos
+++ b/tests/krb5/Dockerfile.kerberos
@@ -1,14 +1,10 @@
-FROM quay.io/centos/centos:stream8
+FROM quay.io/centos/centos:stream9
 
 EXPOSE 88
 
 COPY ./krb5.conf /etc/
 COPY ./ktutil.instructions /tmp/
 
-# Mirrorlist URLs are dead, use the Vault!
-COPY ./vault.repo /etc/yum.repos.d/
-RUN rm -rf /etc/yum.repos.d/CentOS-Stream-*.repo
-
 RUN dnf -y --setopt=tsflags=nodocs install krb5-server krb5-workstation  && \
     sed -i "s/EXAMPLE.COM/KIWITCMS.ORG/g" /var/kerberos/krb5kdc/kdc.conf && \
     sed -i "s/@EXAMPLE.COM//" /var/kerberos/krb5kdc/kadm5.acl            && \
diff --git a/tests/krb5/vault.repo b/tests/krb5/vault.repo
deleted file mode 100644
index 2edb9e3..0000000
--- a/tests/krb5/vault.repo
+++ /dev/null
@@ -1,13 +0,0 @@
-[vault-baseos]
-name=CentOS Stream $releasever - BaseOS
-baseurl=https://vault.centos.org/$stream/BaseOS/$basearch/os/
-gpgcheck=1
-enabled=1
-gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
-
-[vault-appstream]
-name=CentOS Stream $releasever - AppStream
-baseurl=https://vault.centos.org/$stream/AppStream/$basearch/os/
-gpgcheck=1
-enabled=1
-gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial