diff --git a/tox.ini b/tox.ini
index b5859dacf..d46a4911e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
-envlist = {dev,jewel,luminous,rhcs}-{ansible2.2,ansible2.3,ansible2.4,ansible2.5}-{xenial_cluster,centos7_cluster,docker_cluster,update_cluster,cluster,update_docker_cluster,switch_to_containers,purge_filestore_osds_container,purge_filestore_osds_non_container,purge_cluster_non_container,purge_cluster_container,ooo_collocation}
-  {dev,luminous,rhcs}-{ansible2.3,ansible2.4,ansible2.5}-{filestore_osds_non_container,filestore_osds_container,bluestore_osds_container,bluestore_osds_non_container,bluestore_lvm_osds,lvm_osds,purge_lvm_osds,shrink_mon,shrink_osd,shrink_mon_container,shrink_osd_container,docker_cluster_collocation,purge_bluestore_osds_non_container,purge_bluestore_osds_container}
+envlist = {dev,jewel,luminous,mimic,rhcs}-{ansible2.2,ansible2.3,ansible2.4,ansible2.5}-{xenial_cluster,centos7_cluster,docker_cluster,update_cluster,cluster,update_docker_cluster,switch_to_containers,purge_filestore_osds_container,purge_filestore_osds_non_container,purge_cluster_non_container,purge_cluster_container,ooo_collocation}
+  {dev,luminous,mimic,rhcs}-{ansible2.3,ansible2.4,ansible2.5}-{filestore_osds_non_container,filestore_osds_container,bluestore_osds_container,bluestore_osds_non_container,bluestore_lvm_osds,lvm_osds,purge_lvm_osds,shrink_mon,shrink_osd,shrink_mon_container,shrink_osd_container,docker_cluster_collocation,purge_bluestore_osds_non_container,purge_bluestore_osds_container}
 
 skipsdist = True
 
@@ -158,6 +158,11 @@ setenv=
   luminous: CEPH_DOCKER_IMAGE_TAG_BIS = latest-bis-luminous
   luminous: UPDATE_CEPH_STABLE_RELEASE = luminous
   luminous: UPDATE_CEPH_DOCKER_IMAGE_TAG = latest
+  mimic: CEPH_STABLE_RELEASE = mimic
+  mimic: CEPH_DOCKER_IMAGE_TAG = latest-mimic
+  mimic: CEPH_DOCKER_IMAGE_TAG_BIS = latest-bis
+  mimic: UPDATE_CEPH_STABLE_RELEASE = mimic
+  mimic: UPDATE_CEPH_DOCKER_IMAGE_TAG = latest
   lvm_osds: CEPH_STABLE_RELEASE = luminous
   bluestore_lvm_osds: CEPH_STABLE_RELEASE = luminous
 deps=
@@ -220,7 +225,7 @@ commands=
   ansible-playbook -vv -i {changedir}/hosts {toxinidir}/{env:PLAYBOOK:site.yml.sample} --extra-vars "\
       delegate_facts_host={env:DELEGATE_FACTS_HOST:True} \
       fetch_directory={env:FETCH_DIRECTORY:{changedir}/fetch} \
-      ceph_stable_release={env:CEPH_STABLE_RELEASE:luminous} \
+      ceph_stable_release={env:CEPH_STABLE_RELEASE:mimic} \
       ceph_docker_registry={env:CEPH_DOCKER_REGISTRY:docker.io} \
       ceph_docker_image={env:CEPH_DOCKER_IMAGE:ceph/daemon} \
       ceph_docker_image_tag={env:CEPH_DOCKER_IMAGE_TAG:latest} \
@@ -247,7 +252,7 @@ commands=
       --extra-vars "\
       delegate_facts_host={env:DELEGATE_FACTS_HOST:True} \
       fetch_directory={env:FETCH_DIRECTORY:{changedir}/fetch} \
-      ceph_stable_release={env:CEPH_STABLE_RELEASE:luminous} \
+      ceph_stable_release={env:CEPH_STABLE_RELEASE:mimic} \
       ceph_docker_registry={env:CEPH_DOCKER_REGISTRY:docker.io} \
       ceph_docker_image={env:CEPH_DOCKER_IMAGE:ceph/daemon} \
       ceph_docker_image_tag={env:CEPH_DOCKER_IMAGE_TAG_BIS:latest-bis} \