diff --git a/ceph/cephfs/Dockerfile b/ceph/cephfs/Dockerfile
index ae2e74aff5c..6804b70cd28 100644
--- a/ceph/cephfs/Dockerfile
+++ b/ceph/cephfs/Dockerfile
@@ -14,7 +14,7 @@
 
 FROM centos:7
 
-ENV CEPH_VERSION "luminous"
+ENV CEPH_VERSION "mimic"
 RUN rpm -Uvh https://download.ceph.com/rpm-$CEPH_VERSION/el7/noarch/ceph-release-1-1.el7.noarch.rpm && \
   yum install -y epel-release && \
   yum install -y --nogpgcheck ceph-common python-cephfs && \
diff --git a/ceph/rbd/Dockerfile b/ceph/rbd/Dockerfile
index 586aa5992dc..b4ac2a60b9f 100644
--- a/ceph/rbd/Dockerfile
+++ b/ceph/rbd/Dockerfile
@@ -14,7 +14,7 @@
 
 FROM centos:7
 
-ENV CEPH_VERSION "luminous"
+ENV CEPH_VERSION "mimic"
 RUN rpm -Uvh https://download.ceph.com/rpm-$CEPH_VERSION/el7/noarch/ceph-release-1-1.el7.noarch.rpm && \
   yum install -y epel-release && \
   yum install -y --nogpgcheck ceph-common && \