diff --git a/jobs/Build_UAT_CRM_App/config.xml b/jobs/Build_UAT_CRM_App/config.xml
index 4c9c36cfd68ef6c1ef0d949bbd82472b057d0e1b..e1571a360c6621d7873f32307dec0840d540d034 100644
--- a/jobs/Build_UAT_CRM_App/config.xml
+++ b/jobs/Build_UAT_CRM_App/config.xml
@@ -4,6 +4,14 @@
   <description></description>
   <keepDependencies>false</keepDependencies>
   <properties>
+    <jenkins.model.BuildDiscarderProperty>
+      <strategy class="hudson.tasks.LogRotator">
+        <daysToKeep>-1</daysToKeep>
+        <numToKeep>5</numToKeep>
+        <artifactDaysToKeep>-1</artifactDaysToKeep>
+        <artifactNumToKeep>-1</artifactNumToKeep>
+      </strategy>
+    </jenkins.model.BuildDiscarderProperty>
     <com.dabsquared.gitlabjenkins.connection.GitLabConnectionProperty plugin="gitlab-plugin@1.5.11">
       <gitLabConnection>ylhealth</gitLabConnection>
     </com.dabsquared.gitlabjenkins.connection.GitLabConnectionProperty>
@@ -14,7 +22,7 @@
           <description>UAT 使用的版本，如：
 release/1.15GA
 &#x8;hotfix/1.14.1GA</description>
-          <defaultValue>release/1.47</defaultValue>
+          <defaultValue>release/1.49GA</defaultValue>
           <trim>false</trim>
         </hudson.plugins.global__variable__string__parameter.GlobalVariableStringParameterDefinition>
       </parameterDefinitions>