diff --git a/_config.yml b/_config.yml
index f761daa393..82f3df13f3 100644
--- a/_config.yml
+++ b/_config.yml
@@ -111,7 +111,7 @@ defaults:
       hide_from_sitemap: true
       ucp_version: "2.1"
       dtr_version: "2.2"
-      docker_image: "docker/dtr:2.2.7"
+      docker_image: "docker/dtr:2.2.8"
   - scope:
       path: "datacenter/dtr/2.1"
     values:
diff --git a/_data/ddc_offline_files.yaml b/_data/ddc_offline_files.yaml
index c39f050368..0a9859991a 100644
--- a/_data/ddc_offline_files.yaml
+++ b/_data/ddc_offline_files.yaml
@@ -18,6 +18,8 @@
       url: https://packages.docker.com/caas/ucp_images_2.1.1.tar.gz
     - description: "UCP 2.1.0"
       url: https://packages.docker.com/caas/ucp_images_2.1.0.tar.gz
+    - description: "DTR 2.2.8"
+      url: https://packages.docker.com/caas/dtr-2.2.8.tar.gz
     - description: "DTR 2.2.7"
       url: https://packages.docker.com/caas/dtr-2.2.7.tar.gz
     - description: "DTR 2.2.6"
diff --git a/_data/ddc_offline_files_2.yaml b/_data/ddc_offline_files_2.yaml
index bbf59b047f..8d6ede269c 100644
--- a/_data/ddc_offline_files_2.yaml
+++ b/_data/ddc_offline_files_2.yaml
@@ -15,5 +15,7 @@
 - product: "dtr"
   version: "2.3"
   tar-files:
+    - description: "DTR 2.3.1"
+      url: https://packages.docker.com/caas/dtr-2.3.1.tar.gz
     - description: "DTR 2.3.0"
       url: https://packages.docker.com/caas/dtr-2.3.0.tar.gz