diff --git a/jobs/CHM_Run_Automation/config.xml b/jobs/CHM_Run_Automation/config.xml
index 1618c82105af593249b5bff499860f8a33bcd945..25129ccafa30fc2d4ecd20a73c139f95d8826b0f 100644
--- a/jobs/CHM_Run_Automation/config.xml
+++ b/jobs/CHM_Run_Automation/config.xml
@@ -4,14 +4,6 @@
   <description></description>
   <keepDependencies>false</keepDependencies>
   <properties>
-    <jenkins.model.BuildDiscarderProperty>
-      <strategy class="hudson.tasks.LogRotator">
-        <daysToKeep>1</daysToKeep>
-        <numToKeep>3</numToKeep>
-        <artifactDaysToKeep>-1</artifactDaysToKeep>
-        <artifactNumToKeep>-1</artifactNumToKeep>
-      </strategy>
-    </jenkins.model.BuildDiscarderProperty>
     <com.dabsquared.gitlabjenkins.connection.GitLabConnectionProperty plugin="gitlab-plugin@1.5.13">
       <gitLabConnection>ylhealth</gitLabConnection>
     </com.dabsquared.gitlabjenkins.connection.GitLabConnectionProperty>
@@ -20,17 +12,25 @@
         <hudson.model.ChoiceParameterDefinition>
           <name>Branch_Variable</name>
           <description>There are two branches, descript as below
-1. master  
-2. develop</description>
+1. develop
+2. master</description>
           <choices class="java.util.Arrays$ArrayList">
             <a class="string-array">
-              <string>master</string>
               <string>develop</string>
+              <string>master</string>
             </a>
           </choices>
         </hudson.model.ChoiceParameterDefinition>
       </parameterDefinitions>
     </hudson.model.ParametersDefinitionProperty>
+    <jenkins.model.BuildDiscarderProperty>
+      <strategy class="hudson.tasks.LogRotator">
+        <daysToKeep>1</daysToKeep>
+        <numToKeep>3</numToKeep>
+        <artifactDaysToKeep>-1</artifactDaysToKeep>
+        <artifactNumToKeep>-1</artifactNumToKeep>
+      </strategy>
+    </jenkins.model.BuildDiscarderProperty>
   </properties>
   <scm class="hudson.plugins.git.GitSCM" plugin="git@3.12.1">
     <configVersion>2</configVersion>
@@ -76,12 +76,12 @@
       <enableCache>true</enableCache>
       <onlyCritical>true</onlyCritical>
     </hudson.plugins.robot.RobotPublisher>
-    <hudson.tasks.Mailer plugin="mailer@1.27">
+    <hudson.tasks.Mailer plugin="mailer@1.29">
       <recipients>$SonarQube_Administrator</recipients>
       <dontNotifyEveryUnstableBuild>false</dontNotifyEveryUnstableBuild>
       <sendToIndividuals>false</sendToIndividuals>
     </hudson.tasks.Mailer>
-    <hudson.plugins.emailext.ExtendedEmailPublisher plugin="email-ext@2.66">
+    <hudson.plugins.emailext.ExtendedEmailPublisher plugin="email-ext@2.68">
       <recipientList>$QA_Group</recipientList>
       <configuredTriggers>
         <hudson.plugins.emailext.plugins.trigger.AlwaysTrigger>