diff --git a/jobs/Deploy_CHMB_UAT_136/config.xml b/jobs/Deploy_CHMB_UAT_136/config.xml
index 02677adaff66923b359ba5d607d0615ed73a4af0..f6c963f4e28a54de65195ed8f6474d0794c93f68 100644
--- a/jobs/Deploy_CHMB_UAT_136/config.xml
+++ b/jobs/Deploy_CHMB_UAT_136/config.xml
@@ -23,7 +23,7 @@
 master
 release/1.15GA
 hotfix/1.15.1GA</description>
-          <defaultValue>release/1.51GA</defaultValue>
+          <defaultValue>release/1.52GA</defaultValue>
           <trim>false</trim>
         </hudson.plugins.global__variable__string__parameter.GlobalVariableStringParameterDefinition>
       </parameterDefinitions>
@@ -99,7 +99,7 @@ hotfix/1.15.1GA</description>
         </hudson.plugins.parameterizedtrigger.BuildTriggerConfig>
       </configs>
     </hudson.plugins.parameterizedtrigger.BuildTrigger>
-    <jenkins.plugins.slack.SlackNotifier plugin="slack@2.19">
+    <jenkins.plugins.slack.SlackNotifier plugin="slack@2.20">
       <baseUrl></baseUrl>
       <teamDomain></teamDomain>
       <authToken></authToken>