diff --git a/Dockerfile b/Dockerfile
index a6811173..ffa171b8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 FROM keking/kkfileview-jdk:4.1.1
 MAINTAINER chenjh "842761733@qq.com"
 ADD server/target/kkFileView-*.tar.gz /opt/
-ENV KKFILEVIEW_BIN_FOLDER /opt/kkFileView-4.2.0/bin
-ENTRYPOINT ["java","-Dfile.encoding=UTF-8","-Dspring.config.location=/opt/kkFileView-4.2.0/config/application.properties","-jar","/opt/kkFileView-4.2.0/bin/kkFileView-4.2.0.jar"]
+ENV KKFILEVIEW_BIN_FOLDER /opt/kkFileView-4.2.1/bin
+ENTRYPOINT ["java","-Dfile.encoding=UTF-8","-Dspring.config.location=/opt/kkFileView-4.2.1/config/application.properties","-jar","/opt/kkFileView-4.2.1/bin/kkFileView-4.2.1.jar"]
diff --git a/pom.xml b/pom.xml
index af8e9036..7121ec53 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>cn.keking</groupId>
     <artifactId>kkFileView-parent</artifactId>
-    <version>4.2.0</version>
+    <version>4.2.1</version>
 
     <properties>
         <java.version>1.8</java.version>
diff --git a/server/pom.xml b/server/pom.xml
index f7f19f14..10798000 100644
--- a/server/pom.xml
+++ b/server/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <artifactId>kkFileView-parent</artifactId>
         <groupId>cn.keking</groupId>
-        <version>4.2.0</version>
+        <version>4.2.1</version>
     </parent>
 
     <artifactId>kkFileView</artifactId>
diff --git a/server/src/main/bin/startup.bat b/server/src/main/bin/startup.bat
index 712d0b58..d49dc1a0 100644
--- a/server/src/main/bin/startup.bat
+++ b/server/src/main/bin/startup.bat
@@ -7,4 +7,4 @@ echo Please check log file in ../log/kkFileView.log for more information
 echo You can get help in our official home site: https://kkview.cn
 echo If you need further help, please join our kk opensource community: https://t.zsxq.com/09ZHSXbsQ
 echo If this project is helpful to you, please star it on https://gitee.com/kekingcn/file-online-preview/stargazers
-java -Dspring.config.location=..\config\application.properties -jar kkFileView-4.2.0.jar -> ..\log\kkFileView.log
+java -Dspring.config.location=..\config\application.properties -jar kkFileView-4.2.1.jar -> ..\log\kkFileView.log
diff --git a/server/src/main/bin/startup.sh b/server/src/main/bin/startup.sh
index 08682406..978a2047 100644
--- a/server/src/main/bin/startup.sh
+++ b/server/src/main/bin/startup.sh
@@ -51,7 +51,7 @@ else
 
   ## 启动kkFileView
   echo "Starting kkFileView..."
-  nohup java -Dfile.encoding=UTF-8 -Dspring.config.location=../config/application.properties -jar kkFileView-4.2.0.jar > ../log/kkFileView.log 2>&1 &
+  nohup java -Dfile.encoding=UTF-8 -Dspring.config.location=../config/application.properties -jar kkFileView-4.2.1.jar > ../log/kkFileView.log 2>&1 &
   echo "Please execute ./showlog.sh to check log for more information"
   echo "You can get help in our official home site: https://kkview.cn"
   echo "If you need further help, please join our kk opensource community: https://t.zsxq.com/09ZHSXbsQ"
diff --git a/server/src/main/resources/banner.txt b/server/src/main/resources/banner.txt
index 6f89d5c6..3e2119b1 100644
--- a/server/src/main/resources/banner.txt
+++ b/server/src/main/resources/banner.txt
@@ -7,7 +7,7 @@
  |_|\_\ |_|\_\ |_|      |_| |_|  \___|     \/     |_|  \___|   \_/\_/
 
  => Spring Boot             ::  ${spring-boot.version}
- => kkFileView              ::  4.2.0
+ => kkFileView              ::  4.2.1
  => Home site               ::  https://kkview.cn
  => Github                  ::  https://github.com/kekingcn/kkFileView
  => Gitee                   ::  https://gitee.com/kekingcn/file-online-preview
diff --git a/server/src/main/resources/web/main/record.ftl b/server/src/main/resources/web/main/record.ftl
index 10861cdd..a4e96e4d 100644
--- a/server/src/main/resources/web/main/record.ftl
+++ b/server/src/main/resources/web/main/record.ftl
@@ -46,6 +46,16 @@
     <div class="page-header">
         <h1>版本发布记录</h1>
     </div>
+    <div class="panel panel-success">
+        <div class="panel-heading">
+            <h3 class="panel-title">2023年04月18日，v4.2.1 版本</h3>
+        </div>
+        <div class="panel-body">
+            <div>
+                1. 修复 dwg 等 CAD 类型文件报空指针的 bug<br>
+            </div>
+        </div>
+    </div>
     <div class="panel panel-success">
         <div class="panel-heading">
             <h3 class="panel-title">2023年04月13日，v4.2.0 版本</h3>