diff --git a/Dockerfile b/Dockerfile
index 19e4cc2..f58485a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM openjdk:21
+FROM openjdk:11
 EXPOSE 8083
 VOLUME /usr/src/data
 
diff --git a/README.md b/README.md
index a7dc7f3..04ba306 100644
--- a/README.md
+++ b/README.md
@@ -46,7 +46,7 @@
 ```
 $ cd ~/docker/task-bldg/
 
-$ docker build -t task-bldg:0.2.1 ./
+$ docker build -t task-bldg:0.2.2 ./
     DEPRECATED: The legacy builder is deprecated and will be removed in a future release.
                 Install the buildx component to build images with BuildKit:
                 https://docs.docker.com/go/buildx/
@@ -80,7 +80,7 @@
 作成された docker の image を起動する
 
     ```
-    $ docker run -d --name TASK-BLDG -v /home/hayashi/docker/task-bldg/data:/usr/src/data -p 8083:8083 task-bldg:0.2.1 /bin/sh
+    $ docker run -id --name TASK-BLDG -v /home/hayashi/docker/task-bldg/data:/usr/src/data -p 8083:8083 task-bldg:0.2.2 /bin/sh
     105f4c0795542cd0189483e504c036f84e89556f03d00fe3f01dfeb5fd145e00
     $
     ```